my eyeliner/eyelid gap solving problem -
i'm right handed so i take my left hand and place my middle finger about 1cm away from the outer cr. of my eye and gently pull outwards toward my temples so that my top lid makes more of a straight line. it's alot easier to apply liner on yourself if you have a taut eyelid. just don't pull to hard!
also, if you are right handed like me, doing your right eye is tricky, but it is possible!