How do you hold the pick?

Bellycaster

Like this

My finger behind the pick would look like this, it's straight rather than curled back toward the palm, not sure if this is Orthodox

Sometimes when 16th strumming I default to this, this is unadvisable, I know.

Conclusion: I can do Bunny Shadows, I couldn't be arsed to get the guitar out and yes, I should stop biting my nails.

d8m

My pick holding has been on my mind alot lately so its good to read this to help me realize:

A) Its not to late to change

Better ways of holding

Bucket

This is my most commonly-used technique for rhythm and lead, which is the way I was taught was most efficient for alternate picking.

http://i1022.photobucket.com/albums/af347/ConnorF1995/DSCF1691_zpse99f945b.jpg

This one is useful for economy picking, allows the hand to move faster and more fluently when crossing strings quickly:

http://i1022.photobucket.com/albums/af347/ConnorF1995/DSCF1692_zpsf2983bcf.jpg

This is what I use for sweeping - allows me to easily adjust the angle of the pick depending on whether I'm going up or down.

http://i1022.photobucket.com/albums/af347/ConnorF1995/DSCF1693_zps9683d548.jpg

Hertz32

I'm the same as @bellycaster  with the addition of curling my entire fist behind my forefinger to provide support for faster playing, whilst completely relaxing my entire hand for rhythm. it's a veritable finger flapping fest I leave barely any pick area exposed, it's super quick and super easy just to twist my wrist as I pick to create a harmonic. Probably the thing I do best actually, shame i'm bloody useless at finding tracks I want to learn with them in, and never really improvise with them...
Having so little pick exposed means it's difficult to use anything other than Jazz III's. I am thinking about getting a couple of Hufschmid and Winspear picks though  
Gonna try that EVH style hold though, I can't tap for Sh*t.

57Deluxe

Here are a couple of Techniques you may want to try too... I apply these and teach them as they provide massive flexibility and good tone...