I'm currently at A School(graduating a DC3 on Thursday). I have a direct answer to your question.
There's former Company Commanders here right now and almost to a tee, they don't remember a thing you did in boot camp. They don't even remember most of the stupid stuff they may have SINGLED YOU OUT FOR and made you do(like play "I Spy" in the galley or have you mop the grass). Actually, we were completing some ALP stuff today and it was headed up by a former CC(she just left Cape May within the last year). There are 3 students in my class that had her as a CC and she doesn't remember a single thing about any of them.
Long story short, to answer your question, she said there's nothing you can do to impress a CC other than come physically prepared and know your required knowledge. I'm paraphrasing, but at the end of the day, their goal is to break you down and build you up. Not individually, but as a group, a unit. So just come in and know your stuff. That's how you impress them(and it helps you stay out of theirs crosshairs). haha.