A deep c-curve can be a more challenging shape to fit due to the depth of the curve. The curve can actually begin to crease and distort the nail form, making product application more difficult and causing glitches to the underside of your nail. The best way to overcome this is to cut ‘bat ears’ into the nail form where it hits the natural nail groove. This will allow the form to curve under the nail comfortably but also allow it to open to accommodate the surrounding skin