How can I be a good Lieutenant in the army?

I will be commissioning from ROTC in a few years as a 2nd LT, hopefully in the MP Corp. and just want to know what NCO's and even lower-ranking individuals expect from their Lieutenants. I know you want someone who learns, does not already think that they're know-it-alls and all that. I want to know the nitty-gritty. Basically how much responsibility would you entrust to a fresh 2nd Lieutenant and what do you expect from them?