I have been playing my Clvl 47 Assassin all week and she is STILL Clvl 47....
I know that I am still only using the skills I used to get her to 47 and these are now all maxed out, except Enchanting, which is now at 75.
I feel as though I have to stand in a field and willfully get attacked by wolves in order to increase Light Armour. Otherwise, I'll have to start leveling skills I'll never use, like magic, for example.
My question, therefore, is this; what techniques do you use to increase Clvl after your character is "complete"?
I'd start to introduce other skills that strengthen your character but dont break their class...
So for an assassin that had maxed archery/light armor/one handed/lockpicking i would then bring in illusion/restoration or alchemy.
Or, i would do what i always do and start again.
I usually buy training in armor skills at higher levels, especially on blocking/dodging characters. Otherwise I pretty much do what Mason does - introduce new skills that don't break the theme of the build. On my Arcane Bladesman for example I started using Smithing to make jewelry to enchant and sell. Most of my characters I retire around 40-50 though, since there's always something new to try.