climber dude face sketch

I'll give a plain text description of some of my ideas, since my sketch ain't the most detailed:

• jaw hanging down slightly
• protruding lower lip
• wide glossy eyes that blink slowly
• dark baggy eyes
• curly hair & beard
• snow in hair; icicles hanging from tips (not shown)

Overall, a tired dude, like he's been climbing for the past 48hrs without sleep. He sort of has a dubious... sheepish expression.