I think it's a great start especially for your first game! I thought the art and ui looked really nice. However, it didn't feel like there was much actual gameplay, because of there was no trade feature, so I was stuck opening packs for 21 days. I'm also a beginner in all of this, and thought you did great for the 4 days you had, so lets both keep making games! With a little more time, this game will be really fun!