I often use a mix of 4 ounces ProSculpt, 1 ounce Premo Beige, and 1/5 or 1/10 ounce Cernit Flesh. This set of clay samples gives you the kinds of clays you need so you can mix them yourself. This amount would make at least 3 6-inch fairies (Sugar Plum size) and even more Baby Mermaids.
My Cernit is back ordered and should arrive in a few days. If you order this mix, I'll hold your order until it arrives before shipping.