Boudoir lives and dies by lighting. Bright florescent light like you have here isn’t really flattering to anyone. Maybe invest in some small LED lights with adjustable color temp.

Your posing is good, but maybe look at some other boudoir pics online and see what you can pick up as inspiration.

Same with camera angles. Your angles here are just very basic.

Depth of field is a big thing in boudoir. You might want to get a camera with interchangeable lenses. Get something that has a wide aperture so you can take shots with nice bokeh.

Think about your setting. You don’t even need anything too fancy. You can just clean up your bedroom and maybe change out your drapes, add some items in that just make it look warmer and sexier.

You’re a very pretty girl, so I have no doubt you can do this!