Evaluating and documenting security deposit charges

[Bryan N.]

I'm curious how other landlords handle this.  After a move out walk through is completed with or without the tenant, how do you: 

1) Evaluate what to charge them for?  How about if you do the work yourself?

2) What not to charge them for?

3) How do you document it?

I've seen bits and pieces of this subject on BP, but I don't recall seeing anything comprehensive like an "ultimate guide" etc.