I don't know anything about the methods of twisting locs but I've heard that the toughest hair to get started is the straighest...so since you have some sort of curl pattern I imagine that most of the usual methods would work.

Also, like luvmylocs said, there are many people with looser curl patterns (or no curls at all) that have locs, so I would do research and see what methods these people used to start their locs.

Goodluck!