This is made for the SDS it is (Hopefully) in. (Yes, I know he has a limp. I'm not good at messing with existing sprites.)
Easy. For the scrolling background, I made it so it constantly moves left then goes back to the right when it is too far to the left. I made the barrier-things so it isn't glitchy. Also, I accidentally put a smiley face in the clouds. Oops!