thanks for all the comments!
Just to let you know, very few of the grafics in the game will be used in the final copy of it, I will add sounds, and I wasn't planing of it, but putting a slight spin on the apples and sticks is a good idea.
For the person who said that you could just fall to the bottom of the screen and beat the level... you have to get a cerain amount of points to get to the next level, and I am planning on making it so that you can't fly of the ends, or fall through the bottom.
Also, I am not going to make the bird fall faster and faster when you let go of the buttons, that would make sense if the bird just stopped flying, but the bird is still flying, but just not putting extra effort into not falling.
thanks for your suggestions!