Hi hi,
Maybe a bit late post, July, and now is October already

but hopefully this can help.
I'm not expert, but from what I know so far,
most palmist said they would use both hands to do a reading. But that would take a long time, more than a couple of hours.
But reading one hand can pretty much tell what your near future will be like. Palmist will read the hand we use the most. If you're a lefty, then ur left hand will tell u about ur presence state. However, if you're a right handed, just like most people are, they will read your right hand to tell you what will happen in the near future.
Say, if you're a right handed person, then the left hand is the passive one. The left hand reveals your past life or the influence from your family life, your surrounding in early life.
My right palm is different then my left palm.
Most of the time, the lines on the master palm (one that we use most of the time) will change.
The shapes and length of fingers or nails, type of hand, even the loops in our fingertips all determine the palm reading. Even on how you spread your palm open can pretty much tell what kind of person you are.
Just like the saying said, "We can't stop the rain from falling, but we can decide whether to get wet or not".
Quills