Maintain a healthy weight level and exercise on a regular basis to keep muscles toned. 

Don't make any changes to your appearance just before a shoot.

Get a good nites sleep the day before the shoot

Keep your nails manicured.

Shave unwanted body hair at least 8-16 hours before the shoot

Any waxing should be done at least 24 hours before the shoot 

Avoid tan lines  If you already have tan lines it wont take long in a tanning booth to get rid of the lines.                         

 Remove anything that binds before leaving for a shoot.   Pressure marks on skin are bad!

Cut the tags from your modeling clothes!