Hi, thanks a lot for the feedback! I agree that there are definietly a couple of things to do to make it look prettier! Some texture work on the main tree bark and more work on the background could go a long way. Making game for a jam always comes with limitations unfortunately, but that's something that we keep in mind.
We can also definietly work on the clarity of the game. I feel like we did not make it clear enough what to do. To grow further you need to satisfy tree's needs, which can be accomplished by putting the Tree buildings down such as water drains, leaves and worm attractors / beehives.
Once again, thanks for the feedback, much appreciated! :)