I enjoyed lots of trick practise, , although I found some of them difficult to do without landing in a trap or falling out of the game. I was glad of the barriers which stopped B falling out in a number of places, . It was a bit repetitive, and I had to keep repeating the bit where B was getting trapped, !
I like the repeating use of paths! Your levels look intimidating yet if you know the trick, it's surprisingly easy!
I agree with @P_simorf. Grass Land is interesting, fun to play and very satisfying to win. It's a keeper!