1 The confidence with which you work. I can see that during 18 pages of submissions that you have matured and developed as an artist and understand your techniques
2 The purity of the lines in your black/white work. Classically elegant. Mastering pen and ink (right?) is a highly desirable skill for an illustrator to have. Google images for (e.g.) Arthur Rackham, Hannah Frank, Aubrey Beardsley
3 You are highly flexible and can produce proficiently in different styles, techniques and subjects.
You deserve to be very successful. Just do it!