That would, indeed, make a nice poster - especially if autographed by COL Bank. Portraits ain't easy and it's difficult to capture the personality of the subject. IMO you've done that - and the SSI/flash history of what COL Bank created really adds to its meaning. Well done.
I've been playing around with my wife's new digital camera in an attempt to record some of my work - here's a color one I did a couple of years ago (5 IIRC) when I was playing around with oil pastels. Doing shapes like this was kinda fun - attempting Breck-girl like portraiture (my ultimate goal) is something entirely different. Maybe someday.
Richard's $.02