Pratice, Improvement, and Recreational Cocaine.
This game needs a lot of improvement, in many shapes, many ways, and many forms. To begin with The artwork could really use some touching up. I'm inclined to say that no background is better than a poor background, but regardless a background (even if it is simple) is something worth investing in. The platforms for this game are poorly painted lines. I have never desired to traverse poorly formed landscapes in reality and I most certainly have no desire to do so in a Flash game either. Like the background, make your landscape interesting. Something challenging makes the game more enjoyable as well.
The animation could also use some work. The run cycle is only halfway complete. The character does not appear to run so much as he hobbles.
My least favorite parts of this compilation were the cursor that was obnoxiously colored and remained a distraction the entire time, as well as the equally obnoxious soundtrack. The soundtrack should be replaced with something more enticing and not as repetitive. The cursor we can all do without.
Practice, practice ad practice. Put enough time and effort into your next submission and one day you will laugh at the work you used to make.