What is proper OTB draw from?

I have started playing over the board chess more and I have some questions about offering a draw. Do I offer it before my move? After my move? On my time? Thanks

anytime

I usually make the move, audibly offer a draw, and press the clock.

You shouldn't offer on your opponent's move. If you do it before you move, your opponent usually just wants to wait.

blitzcopter's suggestion is correct and follows the guidelines provided in the USCF rulebook as well.

or you  could 'accidently' knock over all the pieces

Talking to your opponent on the opponent's time is incorrect. This includes things like adjusting pieces as it can be considered distracting. So this is an easy part to remember.

If you offer a draw before you move, likely the opponent will ask to see your move first.

So (as blitzcopter said):
1) move
2) offer draw
3) press clock

You also must have the following items in your posession:

1. A sketchbook and some pencils

2. A bucket (to draw water)

3. A deck of cards, face down

4. Some rubbish (to draw flies)

5. (Optional) A handful of plastic straws; make your move, offer your opponent a straw, then press the clock. Just to see the reaction. 

Proper form?

Keep you back straight and hands together. The toes should be just over the edge, and your chin should be tucked in. As you push off with your legs, raise your hips to shoulder level. Once your body looks like an upside down V, and being sure to keep your elbows at 90 degrees, extend the the draw offer in one smooth motion.

Without losing momentum, twist the hips, and reaching over your chest with your left leg, hit the clock with your big toe, and return to the seated position.

It's said that Karpov once preformed the draw offer so elegantly, that his opponent accepted out of admiration even though the position was winning with proper play.

OTB is more complex. It's easy at blitz online.  Wait until you have a hopelessly lost position, then offer a draw.  If it's not accepted, let your time run out.  Well that's how most people seem to think it works anyway.

Just pretend you have to go to the toilet and never come back. Losing is for losers!

Thanks for all of the helpful (and sometimes funny) advice everyone! So I should: move, offer draw, then hit my clock.