From the point of view of heraldry it's just a golden scallop on a red background. All the shadows and details that you're are trying to reproduce so carefully do not really matter because while the charge (scallop) and tinctures (red and gold) are recognizable the CoA is correct. It doesn't make it any less a piece of art though; you're really good at it as it was already said multiple times.
You're quite right. As I've wrote before it's my own demand to quality that set the limit for me. If I'm not satisfied with my drawing I'll do it over and over untill I think it is suitable. That's both a good and a bad ting, but that's the way I have it