For your 3D-ing needs I suggest going to:
www.3dlinks.comwww.3dcafe.comwww.eatpoo.com/phpBB2/index.php (3D-modeling section)
Look at what other people do, and try to recreate it. If you want a job as a 3D artist for a game developer, you should concentrate on making a demo-reel instead of addons for OFP. Of course, I don't want to stop you making addons for OFP, but do not use these for your demo-reel.
Instead try learning how to model low- to middle-polygon models, as this is what you see in computer games.
Low poly would be anywhere from 10 - 2000 polygons, and mid-poly would then go from 2000 - 8000.
Also, something that will be invaluable, is the capability of texturing your own models. As with the OFP community, the game development industry lacks good texture artists, and any modeler who can texture his own models immediately stands out in the heap of job applications.
Suggestions for a demo-reel:
Have one section dedicated to an original character you create. Create a character in both low and high-poly versions. Rig him using FK or IK, then place him in some different poses. That's with the high-poly one, render some stills of those poses, then use the low-poly version (also rigged) and make an/a few animations. Good ideas for animations include:
A scene, I.E "Character walks into a bar, walks over to the counter and orders a beer" or "Character fights Agent Smith on a rooftop". (Humor is a good one here, if you make it funny you're halfway in)
Sequences:
I.E make a walking animation that loops seemlessly, one for running, one for holding a gun and shooting it, one for putting away the gun and so on.
If you don't know how to animate or texture, learn
If a game dev can get a full package deal (modeler, texturer and animator in one) they'll be all the happier. After all, paying one wage to get the job of three is a killer deal
And like Noon said, 4-5 years is an eternity in the world of computers. I won't be surprised if low-poly is considered 5000+ in 5 years, and the world of texturing (shaders) grows by the minute, just look at HL2.