Hum, gotta say, it was overall very impressive. The whole "camera" effect" and all.
Quality and animation are all above average.
Could ramble on a while about details and all, but I'll save that text space hehe.
But yeah, overall, very well made. Can say, I do honestly picture zone-tan as having no endowment. Dunno why, but she fits as a flat crotch xP
Rather interesting choices in the poses and all. Can say though, she honestly feels like the "cumbucket" archetype, along with the "fake dom". So most scenes seems like they fit too.
Bit interesting you included a scene where she came, but it's possible she'd have a sex drive I guess :P Still, even though this has immensely more effort in it. I found the small fan comic where she gets tag-teamed and female-deepthroated by Raven and Starfire to be more amusing. Mostly due to using a near-unique theme (female deepthroating) But also for poking fun on that Zone-tan likely is just "hot air" per se xP Unable to take action herself, among other things.
Can also say that on a personal bias, a little sad there wasn't a female in there somewhere xP