If you want to perform an interrupted and a subcuticular suture you should first make a bite through the skin. In order to make a bite through the skin you should put the needle point perpendicular to the surface, turn your wrist and make sure it arrives at an even point from the entry point. Grasp the needle as it comes from the tissue. Make sure you always keep the needle in view. Then ti e the suture with an instrument tie and form the knot on the side of the wound so it does not effect the healing process. You can tie the knot with the aid of an instrument. The next bit should be place at a point that is double the distance of the wounds edge. If the first knot becomes loose make sure you do a surgeons knot next. Further sutures should be placed at equal distances until the wound is closed. Make sure the knots are at the side of the wound when you are done. To perform a subcuticular suture you should put the first bite deep past superficial. Start this on the opposite edge then tie a wreath knot to keep the suture material in the wound. Next, you should cut the tail as close to the knot as possible. Take the long par the suture from deep to superficial. The entry point should be opposite of the previous exit point of the last bite that was made. You should then move the suture along the surface to close the wounds edges up. When done, make a superficial knot.