Simple just maintain your diet and eat more green vegetables, salad, fruit, juice. Avoid the out side and oily food.
Keeping a low calorie intake and excercising is by far the fastest safe way to loose weight. As posted, stick to healthier foods rather than say, a burger and fries.
1) You cant control where your body looses its fat. You just loose it, and over time sizes will drop due to weight loss. If clothing size is that important to you for you to be "smaller" Keep on track, eventually you willl fall to your target size (Barring any genetics, such as "big boned" "Broad shoulders" etc.
2) Honestly, people just say compliments, and while a lot of the time they are heartfelt, a lot of people in middle / high school tend to just say it because its what they do. Everyone is too concerned about looks etc. Why do they say it? for sh**s and giggles i suppose.
3) (This is coming from a 17 year old male) If you want guys to like you, its pretty simple
-dont be to worried about looks, but don't be that girl who is a 'bum' -> AKA the girl who is never in makeup, always in sweats, etc. This sounds shallow, but what i mean to say is, you don't need to constantly check makeup and all that c**p. Show your beauty, but don't throw it all over the floor like a s***k. Not caring how you look is a turn off, but so is over caring. Look nice.
-Be yourself. (You hear this all the time, but honestly, its true) Theres no need running around pretending youre someone you're not, acting like everyone else, etc. Dont waste all your time worrying about how you're not like x popular girl, just live life to the fullest and a guy come along, respect it, and love it.
- Don't be a tease. Nobody wants to be with the girl who acts like a total s***, and then isnt. Guys who are into those kind of girls will be dissapointed, and guys who are looking more twords personality wont chase it at all.
Remember, guys will notice you for looks, but they wont stay with you unless they like your personality.
TL;DR, Look nice, be yourself. someone will come along, figure "oh, shes cute" get to you, and then hopefully it leads to a happy relationship.