I'm left handed. As I child it was a painful exercise to cut anything. It was like Christmas when my mother bought me my first pair of left handed scissors. But I've since discovered that a lot of the generic sets sold in $ stores or dept stores have rounded the handles and have done away with that sharp fold that defined left grip from right. Try a few, ask the service people in you fabric store what they use. I'll bet they use an "ambi" scissor.
I would not recommend you use a rotary cutter. That would guarantee you cut you fingers off. !!