It isn't hard to make your guitar look good with very basic equipment (even a cell-phone camera) if you know a few simple things.
Some of you may have seen my ad in the classifieds for my Gibson SG:
http://www.guitarforum.co.za/classifieds/2008-gibson-angus-young-signature-sg/
These pics were just slightly more complicated than the basics.
But I wrote this blog post a while back to try and improve peoples' chances of selling their guitars on gumtree. The pics are taken on a cheap cell-phone and go a long way to making your guitar look like something you can love:
http://thecaveofthedead.blogspot.com/
The SG pics were not very much harder, and I'll explain exactly how to do them in a later post.