WakeyNicole, qualification-wise you have to realize that there are qualities every model needs to have, depending on the type of model one wishes to become. Generally, any feature indicative of good health is a must - i.e. maintaining clear skin, a full head of hair, and overall symmetry. Other qualities such as height and weight depend on what you're modeling. You need to attain a required body image by working out, preferably with a fitness trainer, especially someone who has a good reputation and experience with models. Tell them your modeling goals and how you'll need your body to look.
Decide what kind of model you'd like to be. Technically, anybody can be a model. However, do remember that if you don't meet certain requirements, the work available to you will be really limited, and you may have to compensate in other departments (reliability, technique, etc). Do your homework, you can obtain further details from a legitimate modeling agency.