A warm hello to everyone, my question is how do you develope a memory technique.

Browsing through i have read about the many types memory including:

1) Visual memory (score)
2) Aural (sound)
3) Muscular
4) Kinaesthetic
5) Analytical
6) Mnemonic
7)Experiential
8) Prune...
, but i wouldn't say that i can identify in "pin pointing" my particular memory type. so how would i know which one suits me more and how could i develope it?
It takes me awhile (month) to learn a piece (and at that it's not even perfected), i need a more efficient way to memorise pieces and hence perform better.

you need to mix them. Not all memory types help you learn music - just auditory, visual and muscle.