Here is my code to add the mini cart on my custom header .Any help?
<body>
<referenceBlock name="header.container" remove="true" />
<referenceContainer name="page.wrapper">
<block class="Magento\Framework\View\Element\Template" name="custom_header" template="Magento_Theme::header.phtml" before="header.container"/>
</referenceContainer>
<move element="minicart" destination="custom_header.header" />
</body>