These are my guidelines for new models:-
RULE 1 -DO NOT work at higher levels than you enjoy just for the money. You'll regret it, and no amount of money will have been worth it.
Having got that out of the way...
Do you want to be a famous model/actress etc?
If so, limit yourself to Art Nude, and soft/arty Fetish/BDSM.
For those who want to do harder levels - Are you a natural exhibitionist?
I normally phrase this (for those who say they want to do porn) as "firstly,is the idea of having sex with strangers, while other people watch and film, so that even more people can get off watching you fucking, a turn on? and secondly, would you be Ok with friends and family knowing about it?"
If yes to both, then you are right for hardcore work, if you want to do it.
If no (to either) then don't do hardcore, but limit yourself to where you are comfortable.
Take Yourself Seriously
Decide what your limits are. If you are up for hardcore work, DO NOT offer anal from the start. Let people pay you for lower levels then book you again at higher ones.
In no particular order, but BEFORE you start running around seeking work.
*I am happy to put you forward to the couple of good agents, if you meet their general requirements of dress size 8-10, pos 12, age 18-25 and cute to stunning, or, if older, be very striking. Contact me. MILFs, BBW, girels next door etc - you need to do your own promotion.
Be realistic about travel