For a first effort this honestly isn't bad at all. You have a very interesting mechanic I didn't get at first as I was playing I thought I wish I got more points when I was big for a risk and reward, then I noticed that was exactly what you did, which is awesome :)
You could do a TON with this idea, you need to 100% keep working on it :) Personally I would swap out everything for the black and white 1 bit pack, speed it up a little and honestly you have a little gem here :) You should be proud of it :)