Also may I add I wish I had a bigger screen to work with, 1280x1024 blows. Feels too small =/
It's too small to work with if your canvas dimensions are always limited to your resolution, as it is with Gmod stuff.
Actually our screenshots forum here is quite unusual in internet art terms in that we demand people post their screens at the resolution they were created at.
Most people scale down their artwork by as much as 50% for posting online because they work at far larger dimensions than is necessary for internet viewing.
For example, if I was painting at 2000x2000, I'd probably post it at 1000x1000 depending on what the piece is.
Same goes for people who work in pencil; 50cmx50cm canvases get scanned in and posted as 1000x1000px images.