I learned the hard way.. more clothing, more clothing, more clothing. It is the total opposite of pole lol! Definitely full leggings, long sleeve shirt. Even better if you have a leotard, or a tank top tucked into your pants underneath. I have gotten "burnt" under my arms, my wrists, my thighs, the back of my knees, my back, my hip, etc... And it took me that many incidents to learn.. more clothing.
And I second hair pulled back, do NOT get hair stuck or in your face while you are high in the air and upside down!
Something else - cut your nails! Long nails can tear holes in silks!