well those kinds of things aren't done in maya, they're done in a photo editing suite, like photoshop, paint, etc.

also, for UV mapping your model i don't recommend using a lightwave tutorial (usually modeling, texturing theory, lighting, and the process of animation - but not rigging - are pretty universal in tutorials).

www.learningmaya.com - check out the texturing section... a whole SECTION based on texturing and uv mapping tutorials, and FOR MAYA! =O

they've got some pretty good tuts here, too.