Don't

Place small tracks directly on the board edges.

Don't

Use small pads for single sided boards.

Don't

Place comp ref. Lines or text on surface mount pads.

Do

Place text on track layers. It acts as a fail safe to ensure layers are printed the correct way round.

Do

Allow extra track clearance on edges if circuits are to be scored.

Do

Create a profile drawing if circuit board size is critical.

Do

Feel free to ask, we are always pleased to help or advise