If I can carve an owl out of a square piece I'm sure panels would be cake. Just need different tools. And patience
well, yes and no. your carvings, if you make a bobo, you can just say thats the way you wanted it, or somehow fix it.
with the doors, they have to be pretty close to exacting, not much room for error. but saying that, just being carefull and not in a hurry, they will be pretty easy. i would have made some for mine. but i don't use them and the doors i have i really like.
here is a little inspiration for ya.