It's a decent start. There are a few polishing issues you should sort out, most notably with the unevenness of the graphical placement (i.e. the coin spacing, the right platform's height compared to the left, etc). Have you considered enabling "Snap to Grid" in C2? Also, are you inserting your ground/other tiles as sprites, or are you using the tilemap? The latter might be more desirable than the former in this case.
Best of luck!