When shooting silhouettes, be mindful that your outline is the only device you have to say something to the viewer. When we don't see an outline, we interpret the shape as contiguous. If you sit on your legs in a silhouette, you eliminate the outline of your legs, and your shape becomes larger than it really is. When there is no space between your arm and side, you become wider than you really are. When you look at the camera, you have no face. If your torso is square to the camera, you have no (well, few) curves. Pay attention to where the light is hitting you, and make sure you have space in your pose so the outline shows.
Your portfolio represents you to those who might be interested in working with you. If your portfolio contains high quality images, that reflects well on you. When a portfolio contains images that are technically deficient, ... Only put images in your portfolio when they are of impeccable quality. If you don't have the quality images, go shoot again until you do. Shoot with a variety of photographers, figure out the level of work quality you want to represent, then post images that meet or exceed that quality.
Similarly, have someone (ideally a photographer) read your profile and edit it. Proofing our own writing is hard. Like your images, the quality of your writing reflects directly on you - it's our first impression of you, even before we look through your portfolio. Be clear and consistent (you answered "No" to shooting nudes, but in your narrative you say you have no problem shooting nudes with a paid arrangement - that's a "Yes").
Hope that's helpful. Best of luck!