How to use: Step 1. Open the outer and inner cover of the pen, clean the blade with the fabric. Then fold the leaf in the shape of a 'U'; Step 2. The inner cover rotates the pen (tips: Do not tighten and maintain some distance). Then align the U-shaped blade with the tip of the pen; Step 3. Gently insert the sheet and then place the sheet in a suitable position; Step 4. Tighten the inner cover of the pen!