First Jam?
Might want to throw an epilepsy warning, because the tiles are very flashy!
Not much game-play - press a button and watch the ball fall down a few pixels.
Maybe add some obstacles, or bouncing pads that the ball would have to pass?
There is no challenge or goal so the whole thing feels a bit pointless. Add a score counter for all the balls that reach the goal, and some obstacles and it could be a lot of fun! Both levels just seem like the same thing but with different textures. Unless I'm missing something obvious.
Don't worry, we all had to start somewhere, so it's very very important that you don't give up. Watch some tutorials on YouTube, search google for tips, maybe ask your friends if they have some experience - doing these jams together is very different from doing them alone. I started by sketching levels for Portal 2 back in elementary school and now I'm studying GameDesign in a different country! Good luck and keep learning!