I do it both ways, I never was able to get my finish to look good, when I tried SID from the front, sometimes I would catch alot of binding on the back, sometimes I would miss it completely. The last one I did, I used Elmers School glue (in a litttle tube). Glued the binding down in the back where it was just covering the stitch line from attaching the binding in the front. I glued my mitered corners just where I wanted them then SID from the front. The back sides and corners looked really good and even amounts of the binding were caught in the stitching. I will continue finishing my bindings both ways.