Amazon Merch seems completely swamped, every man and his dog seem to be doing it. What sites are you selling on? the admin on the FB site I referred to seems to do okay with ETSY , again print on demand using Printful, I'll PM the FB link if you like, theres load of info on the post and in the files.@Annie Beau - since I started I've sold 11 products and had one commission so I've earned about £10 pounds in total. For me it has become less than an income stream and more of a hobby. I've got 60 designs loaded onto 4 sites (but not Amazon ) and I have had great fun creating those designs. When I get a sale it is a bonus and I get a bit of a buzz from it. In the words of the immortal Del Trotter 'this time next year .......'.
I think for me, the main issue would be getting to grips with Gimp (as a standalone sentence, I am aware how weird that could sound..)