To see if a mount is overlarge, well developed or lean you need to compare it to the other mounts in the hand.
MOUNT OF JUPITER : Located at the base of the index finger it represents your self worth.
If you are confident the mount will be well rounded.
If it covers a wide area it shows you are generous.
If it is high it suggests bossiness.
MOUNT OF SATURN : Is found under the middle finger.
A large mount indicates a gloomy attitude.
MARS POSITIVE : Is tucked into the crease of the thumb.
Well developed it represents courage and a fighting spirit.
If it is flat it indicates a cruel streak.
MOUNT OF VENUS : Found at the base of the thumb.
Heavily developed it shows a strong sex drive.
Underdeveloped shows poor health.
MOUNT OF APOLLO : Found at the base of the ring finger.
A stongly developed mount indicates an interest in the arts.
MOUNT OF MERCURY : Found at the base of the little finger.
Being well developed indicates a warm, receptive nature.
Underdeveloped shows a loner.
PLAIN OF MARS : Lies in the middle of the nine mounts.
When overdeveloped it shows the person has a temper.
Underdeveloped indicates a shy person.
MARS NEGATIVE : Found on the outside edge between mercury and luna.
If this is well developed it indicates staying power and a good ability to cope under pressure.
MOUNT OF LUNA : Found in the bottom corner of the hand under the mars negative.
Well developed it indicates psychic ability.
MOUNT OF NEPTUNE : Sits in the middle at the base of the palm.
If it is well developed it shows a charismatic person.
Paralumun New Age Village