Schedule your portrait session right after children's naps and feedings, so that he /she can enjoy the experience.
Arrive 10-15 minutes before your session. Use this time to relax and and let the kids run around the park etc.

Picking out wardrobe!

Think bold and bright colors   something simple, no busy stripes or patterns. It's best to dress everyone in the same style, color or mood.
 

Family Prep