Since you don't have any models in your portfolio, i can't judge your skills level, but if you failed test assignement, i suggest you to forget wildcat and go after some other things. Wildcat's quality requirements are very high and their payment is inadequately low. It's only worth to consider to work for them if you are able to effortlessly produce high quality content at a rapid pace and if you're living in an underdeveloped economy country, where living standards are low. Otherwise it's a waste of time.