Got tired of looking at this mess So I have been doing this Had my wife make a sheet of the info cards. Using Numista to fill them in. Excuse my bad handwriting.
Looks like you did some good work! I personally prefer 2x2s, so I can write directly onto them, but I see the appeal of flips. I like your choice in what to display. You might consider adding approximate grade and value, if you have the time/interest.
Nice job. Better than mine. Thankfully most of my stuff is slabbed and just goes in boxes. Your handwriting is a thousand times better than mine which is absolutely illegible