I'm not very good at it to be honest but there is definitely an artistic skill involved as I have seen some amazing screenshots of Second Life post worked into pixel art.
Elizabeth Tinsley has taken some nice photos in some amazing places, it's just knowing where they are.
This is just my virtual dolly sat on the fire hydrant (?) next to some painting easels displaying some of my texture work inside my own store within Second Life.
Just minor post work in Photoshop.
Bit boring really.