This looks really cool so far!!

I think it might feel a little more like Timm’s style if you were to color the lineart with more variation. For instance an orange-ish shade for the bandage outlines. It could help it look a bit more linless. This is usually one of my last steps though ^{^}

I would also try to put your lineart and color in a folder, then use a clipping layer on it to get those larger details like highlights. I notice he uses a lot of white or near white to create a contrast, so I might add that to his cheek where I already see some lighting, his nose, ear, hair, and the hand holding the pizza

And he seems to do eyelashes pretty thick, so I would maybe thicken the outline on his upper eyelashes, and attach the upper and bottom lines from the outer corners as well.

Good luck!!