how can I be a youtube beauty guru?

[Chantaal]

First you need some confidence and need to figure out how you'll go about videos. Will you be serious, or funny, or a mixture. Realize that making youtube videos takes dedication and a lot of time to achieve the viewers that some of them have. You'll need a decent camera, good lighting and a video editor software.
Then you'll have to plan out your videos, make lists of ideas and what you'll say. Start off with popular videos like tags: whats in my purse, room tours, collections, Q and As. That'll bring in some viewers. Then make a social media account to link to the youtube channel (facebook, tumblr, twitter). So your viewers can start asking questions and giving you feedback on video ideas.
As for a channel name, find something easy to pronounce that people will remember. Many just use their real names.
good luck!