For a character artist, you are not showing any good anatomical understanding in your models. I don't think you're ready for a professional/freelance yet, try to get an intern or some actual sculpting/anatomy/art classes would be more suitable.
That's funny, I thought the alien was easily the worst piece. Anatomy looks off [those tubes!] and looks a fraction of the polycount. the texture's too simple, too rusty, and too noisy all at once, and looks mirrored despite having unique texture space for everything. You're much better off leaving the animation off it -…