Considering you put in so much feedback in my thread...
Forgive me if I'm being presumptious by doodling over your work, but I find that doodling over people's work helps me communicate a little better, as well as allowing me to test whether I might be right about something:
Alright, the first thing I was wondering about is that your necks seem a little awkward. What bothers me specifically in the first panel is that I can quite see how the spine and the sternocleidomastoids(yes I had to look that up, my brain usually just goes like 'important neck muscles') connect the skull to the torso, making me feel as if I'm looking at a broken neck. I tried to see if I could adjust it, but I might've made his neck too short in the process.
The driver does seem to have a fitting neck, but again, in the second shot it's a little thin on the backside for his spine to connect to the skull proper(even then, what I drew is still a little on the thin side, but I think it's enough for the spine to be conceivably there).
There's also a little something, which is a style quirk of yours I think, because I see it on pretty much all your characters: You draw very Asian noses on everyone. Or rather, I feel like the whole nose, specifically the nose-tip is relatively back into the skull. Personally, I've mostly seen this on people of Asian/Pacific descent. It strikes me as a little weird because it's very unusual(if not non-existant) on European-descent people, so with Black Dram I didn't feel like I was looking at Brits and here I feel a little weird regarding the trucker who is otherwise so clearly white.
Finally, I tried to see if I could spot some blacks. I don't really have trouble with it? And I think it'll improve the general balance of your comic, as well as making it easier to recognise objects for the audience(I didn't quite see he was in the back of a pickup truck till I was spotting it). I think though, you are capable of designing the look yourself, so I'll refrain from attempting to enforce too much direction.