I'm glad you didnt take my comment the wrong way, I meant it to give you a laugh. Flesh, Imho, is one of the darned hardest things we have to do. The only really successfull attempt I had was with a 1/20th Ma.k kit wave from wave. I gave the thing a base coat of tamiya flesh, then gave it a wash of light browns mixed the flesh with a some tans and went over it to give it a softer color then the base, then detailed. After I added a bit of color to the lips, did the eyes, added some stubble the details showed over the skin color.
whole build here /forums/1141983/ShowPost.aspx
You know how I got it to look realistic and how I wanted? well, truthfully, I ruined the flesh color on a TON of 1/35th figures trying diffrent combinations and such untill I finally found something that worked. get some scrap figures and just try over and over till you find a combo you like, and dont forget to write it down!
One thing I did to test the color was after I mixed, I'd dab some on my hand, see how well it looked next to well, real skin tone (caucasion that is)
Though this site is for large scale busts, it may help you, it helped me.
http://www.acesofiron.com/skin_tones.htm
While im giving tips. One of your other major problems is a basic technique you NEED to learn, removing mold lines. Look at the arms of your figures, you can see a raised little lip of plastic where the molds were pressed together. When you build kits, of any sort these will be there. What I do for these is I run over them with a razor blade, cutting as much of it off as I can, the I take a high grit sand paper and sand it untill its smooth. If its a flat surface, I use a flat file to get rid of it then smooth it with the sand paper.
While there are alot of problems with this build, I like it, its a really good start, you have potential my friend, keep building. You know the drill, you have a question, ask