I need to write an email to the guy who cuts our lawn, Dave.  We will be away for a month, and there are special instructions... cut the grass once per week, put cuttings in compost pile, and avoid northeast area of garden, it is a butterfly habitat.  We appreciate his work and would like to give him a raise of $5 per hour too.  We are the Sandoval family.  Please keep the tone informal, this is a neighbor we appreciate.
Dear Dave,

We are going away for a month, so I'm writing you with a few special instructions for the time we are gone, nothing too complicated.  Please cut the grass once per week, and put cuttings in the compost pile.  You can avoid the northeast area of the garden because we are cultivating a butterfly habitat there.  We very much appreciate you and your work and would like to raise your fee to $5 more per hour.

Thanks again from your neighbors,

The Sandovals