Hiya FW!!
Certainly being pointed in the right direction here. The camera is definitely a big player in getting the pics better. But a few other things like lighting and background make all the difference in the world.
I have been shooting with a Sony Cybershot, 12 mp for just over a year. One sale, it was about $100 USD. It has steady shot, witch helps if you are taking a picture of "in-process" build. You should look into a cheap tri-pod. I stole my wife's and set the camera to a 2 second delay. Let's me get the clumsy hands out of the way and stop any movement.
Recently went down this road myself to improve some shots. After reading a bunch of stuff and talking with some friends...after you get a new camera, whatever it will be, mess around with and take the same shot on the same piece using ever imaginable setting change you can think of. Make not of which shot was which setting and when you look at them it will be easier to narrow down what looks best!
Couple things that helped me (just the 2 cents)...
Tripod
Depth of focus (take the picture farther away on a higher resolution and crop later...whole picture is in focus then)
Change the ISO setting. Mine is set to 100. My camera goes to 3200 for capturing a tiny piece of PE as it rockets out into the carpet but while on the tripod, 100 is perfect. This will allow more time for the light to be taken in by the camera.
Lighting - I picked up 2 clamp lights at Home Depot for $6 each and some Day White Energy saving florescent bulbs (the Sony I have, I can change what the light source is being seen)
Picture Box! Made one from used poster board. 3 sides with angles on the sides for the clamp lights to hang off. Doesn't have to be elaborate...just functional!!
Background - paper, blotters, A4 and so on. Stick to light colors if not white. It allow what your shooting to show up better and be the focus of the attention. I am currently using a piece of PVC roofing material. It's white, flexible, cheap(free in my case). I use binder clips to attach it to the inside of the box and it smoothly cascades down the back and across the floor of the box to the front edge.
The rest is just messing with camera settings and lighting!
I'll try an get a couple shots of what I am using just to help hopefully. Might give you a good starting point.
(sorry for going on and on her) Good luck!