I strictly use camsites as a means to an end, the Big-O, so keep that in mind as I proceed...
Here are some of the things that will get my attention and make me at least have a look-see at your room:
Clothing - A model should carefully choose her attire. One of the biggest turn-on's for me is finding someone who has the ability to accentuate her body shape with the right clothing. It can be something as simple as wearing nothing but a man's button-down shirt with it partially unbuttoned exposing some nicely supported cleavage. So many models wear ill fitting clothing that completely turns me off. Don't wear bra's or panties that are so tight they leave marks on your skin.
Profiles - Take some pics with various attire and put them in the free(or members) section of your profile. I almost always look at profiles, and I will often send a tip and a request to wear something that I find ultra sexy from your profile. But please, do keep your profile content current with up to date pics and info.
Setting/Theme - I prefer a setting that lets me know you're in a sexy mood. The brightly lit, studio types of rooms do nothing for me. A darker more romantic setting with a revealingly clothed, sloe-eyed model laying on her bed is what does it for me. As far as Themes go, I was once in a models room who performed a sort of lingerie show where users were asked to tip based on how much they liked a particular piece of lingerie. She never got naked, nor did she need to.
Interaction - Too many models fail to realize that if someone comes in your room, you've already done something right to bring them in, so why not engage them and make them feel welcome? Also, I will leave within seconds if I come in someones room and they display an air of entitlement or the conversation in the room revolves around tipping with the model making more demands than her users. Also, if I'm tipping, you should know that I'm enjoying what you are currently doing.
Make-Up - Please don't over do it. Negative points for blue eye shadow. Negative points also for rouge or base used in excess. I don't want to feel like I'm walking into a bad "B" movie or 70's German porn setting when I enter your room. Most models could get by with just some eyeliner and mascara. Enhance your natural beauty, don't cover it up and create an "alter look" with it.
Note: This doesn't apply to those who do various thematic performances.
Edited for spelling.