Dear AviRana Games,
Your overall concept, the player growing in size and shrinking, is really well and a great tool for puzzle building.
A few tips for your next jam though. An Interesting Itch.io is one of the most important things in a jam. Write a bit about yourself, your game and maybe post a few screenshots. Also, you should patch out all major bug, like players bugging into walls and such.
In terms of level design you want to map out a possibly clear path (like always moving right in sidescrollers) or guide the player for their first few steps via visual elements, after which he can go off on his own.