Get your CFI and go to a school where you want to teach and might have a chance on getting on with them, even if it is part time. When you go there tell them you want to work on your CFI-I. This will let them see and get to know you. This is a big help since most flight schools like to hire in house. Try to get on no matter what, even if it is part time, can always get a job bagging groceries to make the bills. This is what I did and after a few months of living on PB and Js I had enough students that I didnt need to work at the local grocery store.

Try to stand out when doing you CFI-I and be really knowledgeable so they will want to hire you even more.