I like this so far! I got a little stuck on the screen with the rolling log, though: it looked like the stone/gravel ground tiles were walls, so I didn't think I could get the log onto them. I'm not sure how practical this would be if you're working to a time limit for the jam, but it might be worth reconsidering the look/layout of that one: it's pretty as-is, but I feel as though it's not particularly "readable" to have two different styles of tile with exactly the same behaviour, given that identifying how the log behaves on different types of ground is key to getting it into the right place to progress.
Taking another look at the level as a whole, I feel as though simply adjusting the colours slightly might help. Currently, there's a lot of green that's passable and a lot of grey that's impassable which I think is what threw me. The solution involves rolling the log onto certain grey tiles, where virtually everything else grey (water, rock walls) is a barrier.