1. Apply a layer of special glue on the surface of the puzzle. After drying, the puzzle pieces will be glued together. You can pick up the whole piece for easy mounting. You can also paste cellophane on the back of the puzzle without glue. You can also mount the frame directly without glue or adhesive paper.

2. In order to facilitate the mounting of the frame, glue will be applied. If you are not ready to mount the frame, there is no need to use glue. You can directly divide it into several large pieces and save it, which is convenient for you to reassemble in the future. If the frame is mounted and the puzzle bite is OK, put it in the frame and press it with a glass plate.

3. Only when the bite is really bad, we should consider using glue. Brush it on both sides. Generally, brush it on the front. Pay attention to a glass plate under it. Don't brush it directly, otherwise it will stick to the table or paper. When brushing, pay attention not to pour too much glue, wipe it evenly with a piece of wood or something, let the glue seep into the gap of the puzzle, and let it stand for a period of time.

4. Prepare a piece of cardboard larger than the completed size of the puzzle in advance, and put it under the puzzle before assembly, so as to facilitate the movement and collection during the assembly process and prevent the puzzle from scattering and losing.

5. First find out the number of pieces with straight lines on one side and both sides, combine the four sides of the picture, and then gradually move towards the center of the drawing, which can reduce the time of jigsaw puzzles.

6. When combining, if the jigsaw cannot be closely matched with the jigsaw, or there is a difference in color, don't force the combination, and you need to spend more time to find the correct number of pieces.