Hello @ClydeT5 ,
When you drag over the image, make sure you're not text wrapping it. This is easily distinguished by the normal pink line becoming a pink box when hovering inside a text block. You can also just double-click the image placeholder block in the side-menu, and it'll automatically add it to the bottom of your email, then you can drag to where you want it.
Additionally, you're not going to be able to "copy" an image that you ripped from a google doc into the email. You either need to save it as a unique image file (such as a PNG or JPG), or somehow get a URL for it, to insert it into your email via URL method.
For guidance on dragging and arranging blocks
For guidance on how text wrapping works
For guidance on inserting and removing images
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