I usually work with a single theme,mostly on Photoshop.
O.k.some times in other programs  too, to create my picture, playing with 
pluggins and layers.
My usuall resolution is 
800x600, but sometimes 
when I want full details 
I use 1024 or more.
When I work in Bryce3D,
I usually  import figures,
that I make in Poser or Studio Max. 
I work then on the textures and the different views of the figure.
At last I create the surroundings
of  my whole plane.
After that long time of rendering, Bryce needs to be completed.
I usually go to Photoshop,
where I do some final touches retouching the image.
Some other times, my Bryce pict. changes dramatically
when imported in Photoshop.
These times I like to play with many different layers and filters,
so at the end, I have a completely different pict.,of  that imported.
Never the less, Bryce3d, 
in conjunction with Photoshop,
are very good programms
for someone, to work with....