To see if you like the concept, you could make one by laying painter’s tape down, then marking the lines with a Sharpie. I use a single line marking for joining binding strips on the bias (including the final join after I have attached the binding to most of the top of the quilt). I learned this from Margo Claiborne’s YouTube on Faux Piped Binding:
Margo Clabo's Classroom - Faux-Piped Binding - YouTube. These instructions work perfectly for regular binding as well.