Layers of clay for figurine making

Been working on a figurine with super sculpey, but my concern is how the skin layering ontop of the base layer can create air spaces. It sometimes doesn't hug super nicely no matter how hard I try to press it from all sides. Especially with joints like elbows and shoulders, there's definitely going to be a gap between this new layer and the previous baked/hardened layer. Will this be a big problem or is it okay? Is there any way to avoid this?