It all depends on your reasons for wanting to become a model. It's very competitive, takes a lot of time, and costs more money than you make. Most places will not hire you unless you have graduated from at least one decent academy. You have to be exemplary at editing prims, posing, walking, and styling. You will need to have top quality skins, hair, clothing, poses, model HUDs, accessories and much more. There are over 3000 models in SL and very few make it in the 'industry'. This being said; if you love fashion, love a challenge and are willing to work very hard it can be extremely rewarding.