Height, build

to be

tall/short/ (of) medium height

slim/thin/overweight/muscular

Hair

have/has got

short/long  straight/wavy/curly  fair/red/dark/grey hair

Eyes

have/has got

big/small    green/brown/grey/blue eyes

Skin/ complexion

fair/pale/dark/tanned

Age

young/middle-aged/old

Opinion

pretty, beautiful (women), handsome (men)

attractive (both)

Other features

To be bald

To wear glasses

To have a moustache/ a beard