Well, I could model some stuff for you to have a go at texturing, if you like. Personally I'm far from being a texturing expert, but here is some "noob-level" information:
Texturing is about making how 3d object will interact with the light, and is strongly related to mapping. It's not only about giving a color to an object, but also about how you make the object reflect the light, transparency, etc. To texture an object, there are various methods about how you apply texture images to said object. The most accurate (and often the most tedious) is UV unwrapping, where the surface of the object is developed onto a plane ( this would be the UV unwrapping of a cube, for instance
http://www.basic-mathematics.com/images/cube-template.gif). You can also have faster methods such as projections (for example, most maps of Earth are actually cylindrical projections of a sphere). Once you have your mapping method, you can effectively design a texture that will be applied to your object. As I said, it isn't just about colors (which we tend to mostly relate to the diffuse color), but how the object interacts with the light. Say you want to model a piece of rusted metal. Eventually, you're likely to have the best result once you define a/ metallic looking texture b/ rust looking texture c/ a map that will indicate what part of the object looks dull (the rust) and what part of the object looks shiny (metallic). You can even add subtlety in the map, which can give a whole range of dull/shininess (as opposed to a binary separation between the dull parts and the shiny parts). Also, normal mapping has an important role as it serves to model a surface irregularity.
Anyway, maybe you should read basic tutorials about the subject, though you may need some 3d modelling basics first.
That being said, if you don't want to delve into 3d modelling itself, we could still have a demand for straight and simple "flat" textures in order to model flat objects like posters, billboards, etc. In this case, you won't have to bother about mapping and the like, we'll just need an image and we could provide you the canvas. Let me see what scenes could benefit from this type of work and I'll get back to you.