Do They Sell Adidas Cricket Bat Sticker I Paint Designs On Trainers. Would It Be Against The Law To Sell These On Ebay If, For Eg, Theyre On Adidas?

I paint designs on trainers. Would it be against the law to sell these on ebay if, for eg, theyre on adidas? - do they sell adidas cricket bat sticker

It started when I painted my own designs for Adidas. This was so I decided to do on eBay as advertising in a position to see what you want the winning design. I'm not sure if he would allow them to sell a brand manager. People sell Adidas / Nike / Converse trainers all the time on eBay, so if I paid for them is for me to do what they want with them before selling them?

Or is the best thing to do was to send the winning bidder to their coaches, to get me, and therefore the sale of my design and not the current coach? Thanks