I also have Virgo ascendant, I only have very small hands and feet AC opposes to Pisces for my height. My Mercury is in 3rd house Scorpio, sextile/mutual reception to 1st Virgo Mars, also sextile 5th Moon in Capricorn, Moon exalts Mars by trine/sign, Moon also trine 1st Venus in Libra. I would say also Mercury is dignifted by sign through mutual reception and house position. I am not small/short for my ethic group.
To assess body structure based on signs and elements. From A Handbook of Medical Astrology by Jane Ridder-Patrick, I summarized:
Earth Sign Taurus, Virgo, Capricorn, body type is hardy and possesses great stamina. When it is excess, all the body tissues become denser. The skin thickens to a leather like consistency and there is tendency to increase body etc. Earth rules all hard and structural, such as skin, bones, teeth, nails, cartilage, and muscle tendons.
Water are smooth, plump, soft, and slow in movement, flowing and graceful, the hair is thick and plentiful, the eyes are soft and melting. Excess water can lead to laziness, overweight, strong sex drive, the body temperature is low.
For this man above, I think mainly because his luminaries and ascendant lord in the 9th, Fire element house while ascendant in Earth sign. For Miss Karla obvious excess water element for sure, see her luminaries, POF, NN and number of planets in water houses/signs.