At present, I watch about 120 people here on FA, and most of the people who post the most are artists who can be commissioned to draw artwork for you given some reference pictures or the occasional detailed description.

I also noticed that most of said artwork don't usually include backgrounds, or the artists aren't very happy with the way they drew their backgrounds.

Further, I noticed that most of the artwork I have here on FA (and if you want to look elsewhere, on my DA site) is actually backgrounds, and many of them would (if I ever actually finish them) work quite well as backgrounds for commissions.

So, I see two options for myself (three if you count doing nothing, which I'm going to ignore for now):
1) Sell permission to other artists for the use of my imagery for the intent of using it in commissions and charging maybe five to twenty dollars for their use (each time preferably).
2) Get my artwork act together (which means learning to draw better than I do now, which isn't very well) and create 3D backgrounds as I've been doing so far, which you can download for free as desktop backgrounds as is, or sell people's characters drawn into the image for maybe twenty to thirty dollars each, which the commissioner can do whatever they like with.

On the whole, both options seem like rather good ideas, though to keep expectations to a reasonable level, I don't want to allow commissioners (mine or those that buy from artists who buy from me) to dictate new backgrounds and only choose those I've done already.
(this would be to keep everyone fairly happy with the amount of time taken to complete a commission, as it can take a fairly long time to create one of these backgrounds, especially if it's to be commission-quality)

Any comments or questions?
(I'll eventually post this to my DA journal and my LJ so more people can provide their opinions)