u/InterviewSweet8053

The grey is what the keyboard looks like. The right is with keypads on them.

I have the leather I want to use, but how do I (and what do I use) to get them to stick to the keys?
When I bought them, it has like a Command strip type of backing that I just peel off and then apply. I just don’t understand how to get the sticky part on the leather to be one piece. Hope this makes sense. TIA!