Just takes practice.
Blowing up a scout with one shot is immensely satisfying.
( Noit happy baby orangutan, Thu 30 Jun 2011, 11:10, archived)

Demoman, scout, sniper are the three classes I'm just absolutely hopeless with
Mainly because I'm not so good at twitch shootery, give me pyro anyday
( Theoban What of it, Thu 30 Jun 2011, 11:12, archived)

I mostly play engie/medic/sniper
but I've been playing demo the last few days as I wanted to do some more achievements. Just don't ask me to soldier, I hate that guy.
( Noit happy baby orangutan, Thu 30 Jun 2011, 11:14, archived)

I found the soldier alright the few times I've tried it
Usually what I do is just take the class no-one else is, or pyro if I can. It's brilliant at the moment, no-one's checking their backs and everyone's playing spy or sniper, meaning it's a backburner crit heaven right now
( Theoban What of it, Thu 30 Jun 2011, 11:15, archived)

I like Sniper and Spy as I like to do sneaky kills from the shadows than storm in guns blazing.
Saying that, I occasionally break out the Heavy when the occasion merits it
( Edd: The Unfunny Try-Hard Edgelord, Thu 30 Jun 2011, 11:15, archived)