THE NEW TEEN TITANS ANNUAL #1 (1982)
DC Comics

Did George ever draw a Robin only poster? Im looking for one for my Geek Cave

Answer: Officially, there are are Robin posters by George Perez. 

George did draw pinups of each Teen Titans member (I've included the Robin pinup here) that appeared in various books like Tales of the Teen Titans and New Teen Titans Annual, around that era.

The Tim Drake Robin appeared in an oversized black and white plate from The George Perez Portfolio (they were all Batman covers). You get 12 plates in the standard edition and 13 plates in the Warner Bros version.

Of course, there are unofficial prints (and assuming posters) made, but I can't think of anything at the top of my head. Here is a Batman/Robin print from Denver: perez.comicbookseries.info

THE NEW TEEN TITANS ANNUAL #1 (1982)
DC Comics

Excerpt: What prompted your decision to remove Kid Flash from the team before the landmark “Judas Contract” storyline?

The problem with a character like Kid Flash, and it was a problem all the time, is that let's say the Titans are in Titans Tower and they're talking, and suddenly they get a summons that there's a problem in New Jersey. Before Robin could get out of his chair, Kid Flash should have already been in Newark. He was too powerful. In my view when you have a team, no one character could dominate the entire series. What you had to constantly do is slow Kid Flash down and give him a reason not to rush ahead because he should be able to get there so fast. Essentially, I just felt that he actually made the other characters look weaker because he had to slow down and be with them. Of course, if there was a major problem, he should just go ahead and knock ‘em all down at super speed. So I removed him because he was literally too powerful for the group.