Oh goodness me. The camera is fucking terrible, and the music is very annoying.
The camera just moves randomly from side to side, sometimes taking the character off screen. The level, singular because if there are any more, I couldn't play them "Click space to begin" appeared on a red screen after the first level and I could progress no further.
Though, as I have no experience with stencyl, I have no idea how shit it is. So, I really can't make much of a comment on what you've achieved.
As a first project, it is mostly functional and I have to give you credit for that.
The actual game could be a lot better. I suggest you change the direction of play to upwards or sideways, rather than downwards. Games where you go down to a platform tend to oparate on a "get through the gap" mechanic, and in this case there is more gap than anything else, and no need to jump ever.
In in future you can add a mute button or mute key, then please do. Also, please try and incorporate a fixed perspective. I either want to see the whole level, or just the bit that I'm in, with no extra movement.
All in all, I don't want to give this a rating. For a first effort, you certainly could do worse, so I guess I should congratulate you.