I am used to folding over a 2.5” strip and sewing both raw edges of strip to raw edge of back of quilt and then fold over to the front of the quilt.
This method uses a 2” strip then folds both sides of strip toward middle of strip (they nearly but not quite meet in the middle). Then one raw edge is sewn to the backside of the quilt then folded over to the front and hand stitched down. The binding has held up really well given the age and regular use it has experienced.