The art of trimming

I know I am breaking the rules by trimming my facial hair, but to at least look semi-professional in my job I have decided it is a necessary compromise. So far I have only been trimming the neck, and below the chin line, but I am trying to decide if I want to trim a little bit more. My goal is to keep the general beard/moustache combo in tact, but to give it a little more of a clean look.

Here is a link to Hudson't FTM Resource Guide.

Here is a link to eHow's guide to trimming facial hair.

Here is a link to an ezine article.