I'll keep it short:
'A mappers first use is Hammer, A mappers second use is google. Use them wisely.'
Just search interesting things and play other poeples map for inspiration. A lot of poeple forget about the actuall hl (cs/tfc etc..) players, see what they like, after all, it's all about the gamer.
Just think of something thats cool and possibly new...I have always wanted to make a nice peaceful type forest with a nice river to sit on and meditate.
My skills are not good enough for that unfortunately
Habboi, please, stop making such comments. They make me wanna puke. You always say that you're not good enough and that you want mapping skills like <fill in>, damn, stop the whining and just TRY to map the things you want to map before taking conclusions.