you need to be specific. If you are there 3 days a week, alternating days, between the hours of 3 -5 , and are to clean 4 or 5 pens per day. or what ever it is you will be doing. your parents will need to sign this. Not that you are to work for 2 hours or 1 hour. If it takes you 3 hrs to clean the pens, either you need to learn to work faster, or not clean so many pens. The above is an example. I had a boarder who was to clean my horse pens 3 x a week, she bitched constantly about how hard it was , blah blah blah, to many pens, etc etc. she was here a month, and she was here a month to long. Also you need to specify who is responsible for the feed , amount fed etc. supplements included .