Easy to complete:
1. Flip your canvas and mark the location of the wood on the canvas. 2. Remove the double-sided tape, and then paste the wood one by one on the canvas. Make sure: it's important that the edges of the battens and the edges of the canvas coincide with each other. 3. Raise the wood to ensure that the paint angle is sandwiched between the wood angles. 4. Nail the ""U"" nail into the corner of the wood. 5. Enter the cardboard stabilization frame. 6. Check the corners and edges to make sure the frame is stable.