I had a few minutes of good fun with this :) It took me a minute to realize there are small platforms above the starting area, I was trying to do something with the cannon before I knew it was a cannon and I had to interact with it after the first pickup. After that I couldn't get much further than the berry unfortunately. The sticky ball was a nice a-ha moment there though!
I thought the level layout as well as the environment art were nice, although next time maybe you should pick a more harmonious palette to work with (I recommend looking around lospec.com)
Great effort, keep it up!