I reccomend more of an alchemical/psionic bent myself.  Dark side practitioners are more about focusing their inner energies than using outside forces.<br/><br/>Incantations act like mantras, focusing the user's will to acheive a desired effect.  Similarly, sorcerous components are often used to focus the mind of the sorcerer, but the sorcery never draws on outside forces.  Such would be accepting help, and dangerous to the dark side.  (although a Sith can go beyond the dogma of being dark side and try summoning quantum energy beings to do his bidding, although his bidding had best be directly injurious to the cause of life in the Galaxy)<br/><br/>The dark side is about passion, control, and domination.  There's a reason that the greatest dark side artifact ever was the Star Forge.<br/><br/><br/>(more of an explication of general principles than a critique of a style)