It's the other way around with names :) Like I wrote, Ross is the guy on the left, and Nort is on the right. But never mind that: yes, the hand with the snowball is a bit too rough against the snow, my bad. I used to make Photoshop drawings with a mouse for 8 years or so, cause I couldn't afford a tablet, so I got used to coloring scanned stuff (black outlines on paper). Later on about 2 or 3 years ago my very good friend gave me a Wacom as a present, and my style has changed very, very much, but I still have this bad habit of dark outlines.

As for the lights - I was afraid to give it too much color, imho it's better to keep it subtle in this case. If I made the lights more realistic, I'd have to a) give more contrast/shadows to the figures, b) consider snow a light source and direct shadows keeping that in mind (creepy lights from bottom, boo). Which would not be good for me cause I wanted to show all the details of faces and clothes plus a calm joyful peaceful atmosphere. Shadows would make it a more disturbing scene. So I figured it's best to do just a hint of real lights.

Well they're not supposed to be moving around too much, it's a bit of a cliff-hanger: so Ross is trying to steal a kiss and Nort is not letting him, and then pow! pretty fireworks going off somewhere on the left, off screen, and Ross turns to watch; meanwhile seeing Ross's awareness slipping for a sec, Nort is trying to push some snow under Ross's collar, for which he needs to be cautious and not make a false move. So they both end up almost still for a moment.