3D Modeling is a form of art imo, and not something that can easily be taught like most seem to think, same concept goes for programming in Java.
Having a passion for these things is a start, but certainly, just having the passion won't help, I suggest taking some Maya/3DS/Meta tutorials.
Anyone on here can learn how to create faces, color them, and make something different, but in most cases, they aren't well done..
Or, they use currently existing models, like the Abyssal Whip, copy the Whip part itself, and paste it to the handle, now you have a whip with 2 'tails'
This isn't 3D Modeling imo, the 3D modeling part was whoever had the talent to make that whip from absolutely nothing.
If you happened to find someone on this forums, that actually knows how to model from scratch, it's not likely they'll help you for free, or whatever it may be.
Don't mean to be a dream-killer or something in that aspect, maybe someone will help you!
I'm just making a valid point.
Anyways, this should be in the [Only registered and activated users can see links. ] section, and I would suggest taking yourself to that section for more information!
A lot of posts are silly customs as earlier stated, that aren't well put together, but there's some informational threads to learn from,
and some of the actually talented 3D modelers post occasionally, sometimes is a cool model to get your hands on!
That would be my last suggestion, among taking some tutorials and what not, compare and contrast some 3D models.
Take some 3D models that are more well done, or some of the professional ones that come with the programs like Meta, or Milkshape, ETC..
Compare them to something like the crappy sets of wings that float around our forums!
I myself have released a pair a few years back, that are relatively.. bad.
Polygon count is a pretty big thing when it comes to RSPS's, but for starting out with 3D modeling..
I wouldn't worry about polygon counts and making them render in an RSPS, if you can learn to 3D model something you'd see in games like; Final Fantasy..
You can model just about anything, especially 3D models that look great, but still obtain that limited polygon count for a RSPS.