Somehting I always think of doing but hardly ever do is to put the camera up on a tripod and take all the pics from the same angle so you gradually see the project coming together.
This might be easier to do if you're putting together a kit over a couple of days though, rather than scratchbuilding over months.
If you take ALL the pics like this from the same fixed angle you can also put them together in a movie editing program as a stop-motion movie
However if you wanna take close ups as well, you'll need a second camera.




Try to avoid using flash if you can.


Have a sheet, piece of cardboard or something as a background to make it easier to see the object.