Created a module for front end to show the data from a custom table but it is showing a blank page instead.

Here is the config.xml file:

    <?xml version="1.0"?>
    <config>
    <modules>
        <MageSf_OrderCustom>
            <version>1.0.1</version>
        </MageSf_OrderCustom>
    </modules>
    <global>
        <blocks>
            <magesf_ordercustom>
                <class>MageSf_OrderCustom_Block</class>
            </magesf_ordercustom>
            <ordercustom>
                <class>MageSf_OrderCustom_Block</class>
            </ordercustom>
        </blocks>
        
        <helpers>
            <ordercustom>
                <class>MageSf_OrderCustom_Helper</class>
            </ordercustom>
        </helpers>

        <models>         
            <magesf_ordercustom>
                <class>MageSf_OrderCustom_Model</class>
                <resourceModel>magesf_ordercustom_resource</resourceModel>
            </magesf_ordercustom>
            <magesf_ordercustom_resource>
                <class>MageSf_OrderCustom_Model_Resource</class>
                <entities>
                    <ordercustom>
                        <table>magesf_ordercustom</table>
                    </ordercustom>
                </entities>
            </magesf_ordercustom_resource>
        </models>

        <resource>
            <magesf_ordercustom_setup>
                <setup>
                    <module>MageSf_OrderCustom</module>
                </setup>
                <connection>
                    <use>core_setup</use>
                </connection>
            </magesf_ordercustom_setup>
            <magesf_ordercustom_write>
                <connection>
                    <use>core_write</use>
                </connection>
            </magesf_ordercustom_write>
            <magesf_ordercustom_read>
                <connection>
                    <use>core_read</use>
                </connection>
            </magesf_ordercustom_read>
        </resource>
    </global>       
    <adminhtml>
       <layout>
            <updates>
                <ordercustom>
                    <file>magsf_ordercustom.xml</file>
                </ordercustom>
            </updates>
        </layout>
    </adminhtml>
    <frontend>    
        <layout>
            <updates>
                <ordercustom>
                    <file>ordercustom.xml</file>
                </ordercustom>
            </updates>
        </layout>
    </frontend>
    <frontend>
        <routers>
            <ordercustom>
                <use>standard</use>
                <args>
                    <module>MageSf_OrderCustom</module>
                    <frontName>ordercustom</frontName>
                </args>
            </ordercustom>
        </routers>  
    </frontend>
    <admin> 
    <routers>
         <adminhtml> 
             <args> 
                 <modules> 
                    <MageSf_OrderCustom after="Mage_Adminhtml">MageSf_OrderCustom_Adminhtml</MageSf_OrderCustom> 
                </modules> 
            </args>
       </adminhtml>        
    </routers> 
    </admin>
    </config>

Here is the layout xml file for my module:

    <?xml version="1.0"?>
     <layout version="0.1.0">
       <customer_account>        
          <reference name="customer_account_navigation">           
            <action method="addLink" translate="label" module="ordercustom">
               <name>ordercustom</name>
               <path>ordercustom/customer/view</path>
               <label>Order Attachments</label>
            </action>
          </reference>
       </customer_account>   
     
     <ordercustom_customer_view> 
        <update handle="customer_account"/> 
            <reference name="content">    
                <block type="ordercustom/customer" name="view.ordercustom" template="ordercustom/customer/view.phtml"/> 
            </reference> 
     </ordercustom_customer_view>
    </layout>
 

And My controller file is as follows:

    <?php


     class MageSf_OrderCustom_CustomerController extends   Mage_Core_Controller_Front_Action
      {    
   
      public function preDispatch()
    {
           parent::preDispatch();
 
           if (!Mage::getSingleton('customer/session')->authenticate($this))    {
            $this->setFlag('', 'no-dispatch', true);
            
        // adding message in customer login page
        Mage::getSingleton('core/session')
                ->addSuccess(Mage::helper('ordercustom')->__('Please sign in or create a new account'));
        }
      }            
    /**
     * View Your Module
     */
     
    public function viewAction() {

      $this->loadLayout();   
      $this->getLayout()->getBlock("head")->setTitle($this->__("Order Attachments"));
            $breadcrumbs = $this->getLayout()->getBlock("breadcrumbs");
      $breadcrumbs->addCrumb("home", array(
                "label" => $this->__("Home Page"),
                "title" => $this->__("Home Page"),
                "link"  => Mage::getBaseUrl()
           ));

      $breadcrumbs->addCrumb("titlename", array(
                "label" => $this->__("Attachments"),
                "title" => $this->__("Attachments")
           ));

      $this->renderLayout(); 
        

         }
       } 
    ?>


My Block code is as :

    <?php


     class MageSf_OrderCustom_Block_Customer extends Mage_Core_Block_Template
     {
     public function view()
     {
        echo "Hello World";
        $data = Mage::getModel('magesf_ordercustom/ordercustom')->load();

        $collection = $data->getCollection();
        return $collection;
        
       }
    
    }

    ?>

And at last my model looks like follows:

    <?php

      class MageSf_OrderCustom_Model_Ordercustom extends Mage_Core_Model_Abstract
      {
         public function _construct()
           {
             parent::_construct();
             $this->_init('magesf_ordercustom/ordercustom');
           }
      }
     ?>

[![enter image description here][1]][1]

Can anyone just check where i have done wrong and how i can fix it to show the data from my custom table.


  [1]: https://i.sstatic.net/rTscM.png