2. Add the Torn Paper
I have attached a Torn Paper PNG image that you can use. But, if you want to create your own texture of a torn paper, it’s very easy to do. You can find a piece of thick paper or cardboard and tear it roughly in the shape that you want. Then place it on a flat surface, preferably of a contrasting color (e.g. black if the paper is white).
Take a photo using a camera or a mobile phone. Make sure that you take the picture from directly above the piece of paper so that the perspective matches what we need.
Upload the photo to your computer and open it in Photoshop. Using the Magic Wand Tool, make a selection and remove the background.
Download the Torn Paper PNG image and add it in a new layer.
Press Control-T to rotate the Torn Paper and position it over the area that you want to turn into a sketch.
Press Control-J twice, to make two copies of the Torn Paper layer, and call them Torn Paper 1 layer and Torn Paper 2 layer.
Add a Drop Shadow layer style to the Torn Paper layer, using the color