Instructions :

Step 1:

Turn the canvas to the back side, and use pen to mark the wood frames position on its back side. Please make sure that the horizontal & vertical wood frames angle are connected as to the below picture.The wood edge and the canvas edge must coincide each other.

Step 2:

Use tape to fix the wood frames on the correct position. 

Step 3:

Use the double adhesive tape one by one; to connect the wood frames with the canvas.Make sure that the canvas angle clamped with the wood angle. Press the wood frame to be more fixed.

Step 4:

Place the "U" pins in the corners of the wood frame.

Step 5:

Place the ladder shaped board in the corners to strengthen the frame .