It is a good start! You completed a game and put it out there so that is a big achievement already. I played it just shortly so I can not say much... I would suggest improving the graphics a bit. Also, when you reach the finish line, the scrolling down for the restart takes way too long. It is much better if the player can continue playing quickly after failing. Oh yes, after selecting "start" player shouldn't be able to switch selections any more while waiting for the start.
Other than that it plays good. I liked the damage meter.