Shoutbox

First of all, you don't need to underestimate yourself because you are 14. I am 14 too. No problem.

1.It is not that difficult to make it look like the requested picture.
2.The hover state is that when the mouse is over the button, the button gets darker. Read willz's guide 3 for more on this subject
3.The button is messing up because its picture is a bit bigger that the other two.

I hope this will help you fix the problems.