In terms of style, I'd reduce the font size to about 10 point, move the text from the middle back to the left hand side, maybe change the font to verdana or tahoma, but that is just my personal preference
In terms of content, a personal statement should be included, nothing too clichéd, about what you hope to do. You're young, so you want to come across as hungry for opportunity, looking for a way into (presumably) computer animation or graphics. When listing your previous employment, try to emphasise what you got from it, besides a salary. Say two or 3 lines about the job and it's responsibilities (sell it!).
Stress what interested you in your work placement, any creative outlets (your amazing pc case designs for one!), that sort of thing.
Also, breakdown your computer experience into distinct blocks. First, 3d stuff (examples of what you can do maybe, any projects you are working on), then 2d (what do you do that could have an application where you want to work), then general office/windows competency.
Limit your hobbies to just Computer Art, Metal work (expand on this), Skiing. Everyone likes watching films, playing games, etc..