You'll do fine..just say it with heart! Also ....throw in some humor......it is what makes it memorable, my class speaker gave some funny scenarios from our clinical group...the whole school & audience was laughing outloud . Some of us even threw in humor in our little cards that were read outloud by an instructor as we walked up to be pinned.....One big, huge word of advice though...do not go on & on talking...our ceremony was great until the last campus speaker got up there.....she talked..and I am not exaggerating either......for a good 25 minutes.....and kept saying in conclusion about 10 times...to the point of the faculty suttly rolling their eyes as if to say shut up already......and even made off the cuff statements jokingly but we knew they really meant it about her looooooooooong schpiel. She sort of killed the excitement for us......other than that.....you'll be fine!