Tape pattern to wall.
Drill mounting and wiring holes.
Mount letters to wall.
Wire sign.
Collect final payment.
I want to move to Canada....
If the OP is selling to the end user, they need to know the complete process....
Over here it's:
Prior to installation:
Research Code
Research comprehensive sign program details
Verify what is required to pull permit
Design
Get Down Payment (the earlier in the process, the better)
Sign off with business owner
Sign off with property owner and/or agent
Design Engineering/Permit Drawings
Engineer (if required)
Pull Permit
Fabricate Sign
Verify Dedicated Power Source or have one added by the correct licensed contractor
Pull electrical access to area needed to install the sign by the correct licensed contractor
Verify wall construction and if special considerations are required
Verify access to the back or wall/crawlspace or roof/parapet
(Added) The day of the install, make sure ground access is secure
(Added) Make sure access is limited to pedestrians and vehicles in the work area so the install can proceed in a safe and timely manner
(Added) Perform required safety checks, and OSHA safety procedures are in place
Installation:
Tape pattern to wall.
Drill mounting and wiring holes.
Seal all penetrations as required.
Mount letters to wall.
Call for inspection (if required at this time or at end)
Wire sign.
Final Sign Off
Collect final payment
Pray to whatever god, entity or thing of your choice - or for non-believers, give thought with a moment of clear reflection that you made enough after paying insurance, taxes, licenses, fees, labor and business expenses...