It looks quite nice but, it's not much of a game in my opinion. I decided to try comparing two games where one I tried to get the score as high as possible, and another where I simply left the game on to do its own thing. Somehow the latter game actually has a higher score than the former. 

I'm really sorry to say while it does look pretty and I like the aesthetic, this doesn't really feels like a game to me, it feels like knocking on the glass in a goldfish bowl and the goldfish just respond randomly each time, sometimes not responding at all.

Edit: Right, I realized my comment was really unnecessary harsh and deprived of useful information, so just ignore all of it.

The problem lies with that randomness play too much of a part, but since it is the main mechanic, I really do not know what to tell you for improvement that doesn't complete changes the game...

It did fits the theme of the jam, but I would say the player shouldn't feel mostly random in their chances in a game

I personally like the tutorial as it is now. It instructs the basics of every part of the game clearly and doesn't spoil in full detail about the other clouds. A bonus could be videos showing the instructed parts? For example, a brief basic video of what is a good way to setup movement with the seeds.

There seems to be a potential bug. If you go to the last instructed part, go back a step, you can't go forward through the instructions again until you start the game again.