Firstly, you need to provide base credit. Second, you should always save dolls in png, cuz of the dreaded gif and jpg monsters that cause the less than clean outlines and colours.
Now, for CC on the actual doll. You've fallen into the trap and made the mistake that many first time dollers make; pillowshading. You also need to make the clothes stand out from the base more, and add wrinkling. A side on base is difficult for that; better to use face on bases, like the ones found here: If Looks Could Kill... t e m p
A site with great, easy to follow tutorials for first time dollers is this one here: Watermelon Bubblegum
I'd recommend the Full Doll Tutorial, as it covers everything you need to know, from hair to shoes. ^^ I hope to see more of your work in the future.