wow man super flashback to the hey day of the Turtles. xD I really like how you draw their different skin tones, as well as their different body types... that's something i always look for in good Turtles fan art. I'm really very impressed.
Excellent poses! I like the colored columns effect too. Personally, I might have chosen a different font style for the initials at the bottom of the picture, but the overall effect is lovely. ^_^ By the way, one of your other updates featuring each turtle individually in the same poses you use here are titled with each respective turtle's family status. You labeled Don as the second oldest. Just out of curiosity, is Don the second oldest in canon? I'm not completely familiar with TMNT, but I thought Raph was second oldest, followed by Donny.
everyone just assumes Raph is the second oldest because of his rivalry with Leo, but I really don't see it that way.
No, they never mentioned in canon what their birth order was, but I've just always thought it was L D R M because of Don's maturity as well as ...well.. more evidently, the order in which they always present them in the opening sequences of the show. XD; it's ALWAYS Leo, Don, Raph and Mikey. Also I've been told that one of the creators of the turtles has always seen it as Leo Don Raph Mike but I don't want to use that as an argument since I have no idea where that person got that info XD;;