ATC into card

I have several ATC's, that would be Artist Trading Cards. They are kinda like the stamper's baseball cards. I have joined several swaps for them over the last couple of years. I was going through some of my stuff and found a stash of them. They are really pretty but what are they for. So I decided to use them and make bigger cards that I can actually use. I am really trying to use my stuff and not just let it sit around for me to "collect". So here are 3 cards that I made using ATC's on them. I used a card base that is 4 1/4 x 4 1/4 (now I just have to find some square envelopes) and I just had to add a ribbon or brads and a sentiment.