@Black_Rainbow_Project while you are not being unreasonnable here don't you think your business model (or lack therof) would inevitably lead to your designs being copied?
Stealing someone's work is not cool, but no matter how good your bags are (you've told us they are great. I take your word for it) it's really hard to go past the fact they're not someting one can easily purchase. They are not something one might call a product.
It is entirely up to you not to turn your hobby into a business, but if you don't make anything out of your designs, no wonder someone else will.