Nice work, that was a fun little game. Some things I think that could make it better would be to improve the hitbox for the cloud's lightning, it seemed that sometimes I would get hit above them, I felt like only the electricity part would be dangerous, but that could be me. Another thing, was with the coins, I suppose they were in that area because it's dangerous, but I feel like they could have spawned here or there to give you a little more to do.
Other than that, great work on the game, and I hope you enjoyed yourself too!