Copy Paste on Face?

I saw a great tutorial several years ago, and never book marked it - but it demonstrated HOW to copy and paste or copy move - on to a face.

Every time I do this action, (copy an image, for example) the copy ends up just under the face of where I paste it, and I have to go in with the move tool and try to grab it’s edge and lift it up 1 mm so it resides on top.

May someone please help me understand how to copy and paste or move a copy so it sits on top?

Most appreciative!