roll hem foot attachment and requires a fair bit of patience.
this is generally my preferred method but it does depend on the fabric and shape of the edge. the roll hem foot is not good with curved edges or thicker fabrics so this is generally my go-to method especially when hemming dresses or skirts. all you need is your basic machine setup and off you go. this will take twice as long as using the roll hem foot but is much more reliable so its worth it.
you will want to start by folding over the edge of your fabric and placing it under the foot. you can make this as 