I make vector traces for fun, feel free to use any of them for your own edits and projects (Wallpapers, avatars, posters, itasha, etc) as long as it's for personal use. A download button is always available for high resolution.
For sure, go for it. If you need a different resolution or something, let me know. I can even share each silhouette on their own on a transparent background if that can help, I should still have the project files backed up.