I don't ask for much... this is what Andy and I discussed for my bat...! I would emphasise that I said how I played and Andy came up with the commentary, other than the handle.
Weight - 2-9 or 2.10
Right handed batsman
standard short handle
large oval handle
middle position - mid to low - about 6 inches from the bottom
Classic SAF style off-set edge
nice bow
mix between audix and traditional shape
reasonable sized edges, but with more of a focus on spine height.
resulting feel of a good swing weight/balance for a mainly front footed top order player (who likes a moo over cow)
obviously the standard requirement for a massive middle, a gunshots/rifle sound whenever the ball comes off the middle and pick up so light the bat feels like a wand
I gave no instructions regarding number of grains - but did ask for a relatively clean bit of willow if possible.