At first, Robin's head was too big but, with editing, that was fixed Physically... his ego is the same size as ever
-Robin: ".......... T_T #......."
((... he is not amused...))
Robin is in charge of the main page of the group and keeping the other Titans in line. So, really, on the update ticket, he's just kinda buzzing about, enjoying himself. Like in the Mad Mod episode when he and Starfire save Beast Boy (and the room's filling with acid--remember?), Robin acrobatically zips to the door and slams it shut with a big grin on his face.
Many times, he's "Mr. Hemorrhoid-Serious" (in fact... almost ALL the time) but he's got his moments of whimsy.
Although it looks like Robin's the one dabbling in the paints, it's acually Raven's job to handle the art. She doesn't actually make the art herself, she's meant to be "in charge" of the gallery of the group.
*pink in the "white" areas make it easier to use GIMP to "select all of one color" (the white BGs) and make it trasparent, while then selecting all that pink to make it all white