I recently found a nice video that explains a way of texturing models I like to use that can yield very quick and efficient results. He creates the model for a “blender game engine” game but the same technique applies for any game models really (mainly world models).
The idea is basically to have a texture map/atlas before creating the model and then just moving the texture coordinates of a selected face to use the right parts of the atlas. This way all your models use the same texture and need to be only one geometry in jME3 later, which is very efficient and also simplifies batching a lot.
http://www.youtube.com/watch?v=AQOQ5XEoidQ
Cheers,
Normen