Whatcom Conservation District Election

Well... You know all those complicated numbers, procedures, and bar codes on your primary and general election ballots?  You won't have to worry about too much of that for your Whatcom Conservation District election:

Here's my quick summary:
(1) Put the top form ("ballot") where you vote (for either Larry Helm or Joy Monjure)
 in the small blank ("secrecy") envelope and seal it.
(2) Put the bottom form ("affidavit") where you sign in the addressed ("return") envelope.
(3) Put the small blank ("secrecy") envelope in the addressed ("return")
envelope.
(4) Attach a stamp and mail!

There are "Instructions to Vote Your Ballot" on page 2 of the enclosed handout.
How could anything possible go wrong?