You are a kitten. You automatically fall. Press SPACE to move up right diagonal. Don't touch the purple or sandstone blocks. Or lava. Reach the left end of the backdrop to reach the next level. Good luck!
I got the idea when my friend had a Flappy Bird clone that didn't work like normal Flappy Bird. That doesn't mean he failed though. I'd leave a link to the project, but the project is on offline Scratch and he doesn't actually have a copy of it so can't upload it. In case you want to know, there are 6 levels and I'm planning to add more!