I cannot understand this, but the more I look at Wil in the third panel, the more he looks like a head and neck sticking out of a flat cut-out—as though if you turned him sideways, everything but his head and neck would disappear into a line. I think it has something to do with combination of the tweed coat and the wide, lined shirtfront. Somehow the two combine with the head to give an Escher-like effect.
I feel bad about pointing this out—the art has been really, really, excellent these past few weeks (so, of course, I've not said a thing), and I'm loving the perspective 'shots.' But this one didn't work, somehow, and—this is the thing—it bugs me, because I can't figure out why.
And, of course, it may just be my crazy occipital lobes.