Ghosting/dimming (print)

[ktinkel]

I am making a mailer for friends to use in a local political campaign.

The front has a sketchy drawing of a house.
The head is “Don’t let them spend your house away!”
My friend wants the house to sort of disappear gradually in a mist (his language).

I think what I want is to ghost or dim the drawing, beginning on the right end (the garage) and lightening up towards the middle somewhere, leaving the left end fully dark. Graduated ghosting. Probably not too regular a pattern.

Using Photoshop I am sure this is easy but not for me. Can anyone tell me where to begin (or flat out how to do it)?

Screenshot is to size (but the real thing is a 600 dpi tiff, and I may need to scan again at 1200 dpi for safety). Printing will be 133 lpi on uncoated colored stock in one color.

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