WOAW -- talk about leaving things to the last possible moment...!
I only just reveived notification of this competition a mere two hours ago, so my entrant is rather rushed (and arguably incomplete). At any rate, here it is:

I'll confess that this didn't turn out AT ALL as I'd originally envisioned (it was
supposed to be Wheelie when I began!), but I'm reasonably pleased with the end result, nonetheless. This actually marks my very first attempt at illustration for nearly FIVE YEARS (which is probably quite evident from the presentation itself). As you can surmise, a quasi cel-shaded approach was adopted with this particular piece, because I felt that it was both traditional (with aesthetic regard to the old cartoon), and would also lend itself well to the "screen printing" technique of t-shirt adornment. Anyhow, I see that I'm up against some stiff competition, here -- excellent work all round, folks!
Oh well, that's that, then -- best of luck to everyone who's taken the time to enter, and may the best Cybertronian win!