I always ask myself what's important in this sentence other than the first word. such as "I'm new to this school, and I have no clue as to where the lockers are."
I'd capitalize "I" because I'm important. Everything else is fine as it is. Using this method really helps.
I am terribly sorry to ask for this inconvenience but I am experiencing car difficulties and I would much appreciate if you could possibly help me out tomorrow? I need a ride to work and I didn't know who else to ask.
