Without seeing them its's hard to say Mike. This is where it can be confusing and time to take a step up in your figure painting.
The level of painting done these days on figures is an artform in itself. The use of skin tone or flesh colors are really only a base coat for more complex painting, even at a basic level. Meaning that the skin tone should be considered as a base only. On top of this you would add a highllight in areas and a shadow in others as appropriate. Using your original flesh tone as a starting point and adding colors to make for tonal variation on your figure's face. Depending on his setting this can be rather extreme and as your painting skills improve you may use a whole range of colors to achieve a final result that adds life and character to your figure.
By itself your Testors skin tone may look odd, but once modified and applied it will soon become apparent that the overall effect is right. You might add some brown to darken and white to lighten and experiment until you become more comfortable and want to add things like reds, blues, yellows etc. to really fine tune your skills.
There are several really good publications as well as websites that deal specificaly with figure painting and offer great advice to beginners as well as old pros.
Kalmbach Publishing (the owners of this forum and the publishers of FineScale have a very helpful title in their catalog . "How to paint realistic military figures." Another title is Shep Paines book on Dioramas. Both offer some really good advice working with a variety of paints.
Don't give up hope yet. If its not too late keep the base color you have now and make a light wash of dark brown. This will recede from the hisgh spots and settle in the low spots and creases etc on your figures face. It will look muddy at first and you will wonder "Geez, what was he thinking?" but as it dries you will see the detail picked up and a slight tonal change to the base color. Go in and with a fine brush add your highlights with a lighter flesh tone. This can be done meticulously with a fine brush or you can take an easy route and dry brush this on your figures face so that the high spots (nose, cheeks, brow, lip etc. ) are highlighted. This actually gives a pretty fair rendition of detail and will cover these until you can experiment with a technique, style and paint system that is comfortable and works for you.
Good luck.
Mike
"Imagination is the dye that colors our lives"
Marcus Aurellius
A good friend will come and bail you out of jail...but, a true friend will be sitting next to you saying, "Damn...that was fun!"