You should really wait till you are more advanced before even making portfolio. You can also add in more than just bases and clothes. Show people you are more versatile than that. You need more foliage examples.

Show some creativity in your portfolio people wanna know what your style is. If possible try to imitate other styles too, it'll show that you can adapt and work well with others.

Overall on your work, it needs more improvement but if you can try to upload it without it being compressed by imageshack.
Not bad, could do with a little more variation though.

Check this out if you're interested in improving and helping a quality project out at the same time:
Going to take this oppurtunity to link you to my Ad as well.