There are a few things you can do to make your tattoo handwriting look more realistic. First, consider the size of the tattoo. If it is too small, it may look like a child's scribble. Second, pay attention to the location on your body. The skin on your hands and feet is thinner than other parts of your body, so the tattoo may not look as sharp. Finally, ask your tattoo artist to add some shading or color to the tattoo to give it more dimension.