All my work order forms are pretty much the same as yours. All the important contact information (name of company if applicable, name of person requesting, phone number, address, date, etc) couple boxes for general ordering, a proof spot for a quick drawing, spot for materials customer requests used and a mini quote area for what I initially charged, if he paid a deposit and what remains.
Also have one for lettering jobs on big rigs ... is a big check list and lines next to what they all need (name, place of origin, txdot, usdot, mc, rrc, gvw, vin, truck number, fire extinguisher inside), some contact info, info on pricing and a small proof box for their company name drawing mock up. This one is more of a customer fills it out themselves sort of form while they wait for their turn.