HANDS
Everything matters in Palmistry...the size of the hand, it's shape, color,texture, the nails, depth of lines, even the manner in which you hold your hands when I read your palm.
The hand you use to write with is your dominant hand. The lines on this hand change through the years due to the electromagnetic images from your brain which know your lifepath. Lines can add on. Once added they do not go away.
The other hand is your destiny hand. It generally remains the same throughout your lifetime. I do not consider it your last lifetime as both hands are generally similar.