Person one delivered within a week two gorgeous designs. No problem.
Person two is where my question comes in:
On that same day [January 30th] I give them a rough sketch and we negotiate a price. They say they'll send me their PayPal soon. February 5th they give me an update saying there'll be a slight delay. At this point I inform them that it's okay and that they don't have to do it anymore, as personal issues came up and I lost interest. They completely ignore that and two days later give me a sketch. I play along with it and ask for a small change.
Last night [February 29th] they send me the sketch but now digitally done. It's been a long time and I forgot about the commission. Since the last update I also made the financial decision to severely limit how many commissions I buy this year, including this one.
I'm not sure how to word myself to ask to back out since they already gave me a sketch after I said I wouldn't like to continue the commission. From what I see on Twitter they get frustrated about this kind of stuff and I don't want it hung over my head, I already feel bad enough. :(
So how do I politely ask to cancel the commission in a situation like this?