yes, armature are very important. Dont be nervous. Ive never understood that at all. why does it matter if its not good? as long you can see WHY its not good, its progress and then as the next one is better. No matter how happy I am with a sculpt, I still expect the next one will be better. That is when I am not happy with myself, when the next one is not in some small way improved, because then what was point in sculpting it.