For 18 years girl, 144 pounds 5 feet 9 inches, losing ten pounds for modelling sake :( i know....please don't pick on me for it! I wont be unhealthy!
Oatmeal for breakfast: 200 and tea w/o sugar
Lunch: chicken quessidia with low cheese and no oil
fudgicle: 100
veggie burrito: 320
carrots
i usually have more fruit, but today was sort of an exception...does this sound okay?
(i have already had all this)

sounds pretty good. Just include excercise!

Sounds fine, but what kind of modelling? To my knowledge, most 5Ə models these days are no more than 115 Ibs. Even I would be too fat to model and I am 5ཆ and 126.

get rid of the fudgcicle.
If you're going to be deliberately underweight, you really need to eat more vegetables and fruit. I also reccommend taking vitamin supplements, and make sure you drink at least some skim milk and.or calcium supplements...