yes Go ahead Brent, that is how I do my Figurines.
Its 15 minutes, then take it out the heat they absorbed will finish the baking. Just be careful you don't over cook, other wise it will discolor it if its colored sculpey and make it brittle, if you are just using white, don't worry bout it,and as long as there arn't parts that are thin or long and it over cooks, it won't break.
So if its a pillow, or Column it'll be ok.
Adam