Smart move, make use of every resource you can. So long as you're upfront with your clients in that you're with a web dev team (for now) and that the portfolio represents you both/all. No need in being dishonest since they'll presume you're two birds of a feather presenting quality work. You can play that high school card all week, though; if there's one thing I learned from my very first sales job it's that EVERYONE wants to help the high school kid/graduate trying to earn money for college.
Great job mikey! I would jeer at you for getting MJ's jersey # wrong, but I'll give you +1 up for having balls and initiative enough to dive in the big leagues at the age he was riding the bench.