Suddenly I get a weird burning sensation in my left palm then a vision of an eye growing then I see a bright spark with the naked eye on it.

This is really some assisted full body awakening.

Left palm chakra is the passive that you use for sensing energy right?
While right palm is for projecting energy?
Or it's just a preference?

When I wave my hands that means I am "seriously" casting a spell. I cast most of them mentally. Tho I am getting familiar with the mudras too. Guess my hands are getting cleaned energywise.