first work with other photographers to build up your portfolio.
i can reccomend some good ones. its free. Or to get job
opportunities u can sign up at
onemodelplace.com
And after you get those pics and od some basic jobs like paid work,
commercial, IT shows..etc. u can like go and send your portfolio to
reputable agencies liek , jeffreychung, quest, elite...etc. and
hopefully they will accept u