Oh man, sorry but I gotta push back on one thing here, he's actually right that you should have said no sooner, and that's the part that stings. I know it feels unfair because the tweaks were his idea, but once you hit revision 4 or 5, that's when you gotta send the email that says "each round adds two days, so if we keep going, Friday is off the table." Putting that in writing early gives you a paper trail too, so when he pulls the "you should have told me" line, you just forward the email from two weeks ago. The 5 pixel stuff is on him, but the boundary was on you, and learning that one hurt me more than any client ever did.