Well said Andrew… ;o) I agree!
My thoughts about this topic: Based on my personal experience:
When you put your work on the internet, others will copy it. No matter how much you try and protect your product… someone will copy it.
Example: I make wire crochet braided beaded bracelets (say that ten times fast) lol Crocheting is nothing new… crocheting with wire or beads or crystals or gemstones… nothing new. I took a combination of different crochet and jewelry techniques and applied my own personal spin on it and poof… a Braidlet was born. ;o)
I remember the first time I saw a bracelet made like the ones I make.

In all honesty for the first few seconds, I was miffed… to say the least. GRRRR!

But,I started looking at the piece she made, and it was a little different from mine. She used 28 gauge wire (I use 26), so right there… it became her unique bracelet.
After thinking about it for a few minutes, I was flattered

and humbled

that someone would take time to make something I created, (not exactly like mine) but… they loved what I made so much… they too wanted to spread the joy to others. And for this I am grateful… ;o) I even did a Treasury on Etsy with her bracelet included. ;o)
What I did do for my protection was Brand the name "Braidlets'… which is Trademarked.

Maybe this will help with the guilt feeling… Andrew is right, if copied 'Exactly'… then I too would worry!

I personally think it's an Awesome bag! Well Done CJ