It took me a long time to figure out I wasn't supposed to be collecting the coins...I couldn't figure out why the back screen kept catching up to me! The problem I was having though was I would try not to collect the coins by double jumping, but then I would hit a gap between platforms from the double jump. I think what might make the game a lot more fun would be a "slam" button that brings you fast to the ground, that way you can correct yourself if you're approaching a gap that you weren't able to see because of the scrolling. That, or zooming the camera out a bit. Good job though!