Location, location, location ! Pick a great location to help get into the vibe of the shoot.
Music of course! I often take my JBL speaker with me on shoots and play music.
Get into role! Have fun in the land of make believe and get into character.
Make shapes, get creative and be brave to try new things.
Stay warm, no one likes shooting whilst they are freezing cold, goose pimples are unsightly too.