Game Basics...
... are not applied.
The first level is supposed to be easy and fun. Not as hard as this one. I tried like 50 times and still couldn't make the jump... Either the gap should have been smaller, or the jump should have been better. And about that running animation in the intro, it was odd, but you could see that he was running. I'd say make some improvements, and try again.
You could also watch other running animations, and get an idea of how they do it.
Anyhow, since I couldn't get past the first jump I can't judge any further. Maybe an sound on/off button to be added? But I'll give you 4 stars for the effort, though improvements have to be made!