ok, here goes the "it depends". It depends on your sofa shape and complexity, your sewing skills, although it doesn't require being a professional sewer. And it depends on your level of patience LOL! Not being a professional sewer (not even close) I would say it's not that hard. It does require time, patience, a bit of abstract thinking, and a lot of measurements. In this tutorial, I try my best to explain how you can approach your own sofa.