this saturday i will be taking some pics for some friends of mine. they are for a christmas card. they want the pics to be taken on a mississippi gulf coast beach (great ides for christmas i know, but its what they want) it will probably be around 4 pm or so when i start shooting so the sun will be getting lower in the sky, it will be pitch black by 6 or a little after. so here is my problem, I HAVE NEVER TAKEN PICS OF PEOPLE! only cars and old houses and stuff. i will be using a canon power shot sd1000. so no fancy camera stuff. any tips or pointers will help. THANKS!