They seem really hit or miss. For instance, Star Fox is just a screen cap. That's just not gonna cut it IMO. But others like the red Perfect Dark label are really promising. I think you've got a good idea going, just need to spend a little more thought on some of them to really make em stand out in a crowd.
Yeah I know, I have a different Star Fox label but I just love hearing Peppy say "Do A Barrel Roll" and I could not find anything for San Fran Rush except screenshots (It's very hard to find high quality art from 15 years ago). And, they will stand out in a crowd more when I put them on the cart because I'm using all colored carts, no grey at all.

They definitely aren't perfect and I'm sure I'll change my mind later so I'll be keeping my originals to put them back when I get tired of these.
Thanks for including my N64 warning label.
I couldn't remember where I found it or I would've credited you, all I did was resize it to be the same size as the official