Great to see someone take up modelling. I wouldn't get too fussed by texture work at first, concentrate on getting better at mesh work. Wings seems a popular mesh modeller so it would seem a good place to start. With texturing you have to decide how much of the detail is in the mesh or the model (more towards the later in gaming). There is a lot of trial & error. A couple of other things can effect the look 'in game', the config can change the look incredibly, particularity if you have used specmaps/bumpmaps and use different shaders.
One thing you could try is taking some of the current map textures and using them whole, in part, or just matching colours. Trying a random texture is sometimes productive. The right texture on your barrel turns it into a spacestation.
I like to test import/export, here is Julius meka, the Gryphon, in wings.
Here is the wings file -