Tape the corners of your drawing onto a flat surface. It is important that it is held exactly in place. Then place the tracing paper over your drawing and tape the corners into place. This must be fixed in place as well. Make sure the tracing paper generously covers the area you wish to transfer.
Draw the frame around the part or entirety of your drawing that you wish to transfer, using the ruler. It must be the same rectangle as the canvas. The ratio of length to width of the section you will transfer must be the same ratio of length to width of the canvas. For example, if your canvas is 1.5 meters wide by 1 meter tall, the section of your drawing must be in a ratio of 3:2.
Draw a grid on the tracing paper over your drawing using the ruler and graphite pencil. The grid must be made of equal squares. Measure equal increments using your ruler. The size of the squares should be about 1/10th the length of the height or width (choose one).
Draw a grid on the canvas using the ruler and blue color pencil. The grid must have the same number of squares as the grid on the tracing paper. You will have to do some basic ratio calculations to determine the size of the squares. For example, if the drawing is 10 cm wide and the canvas is 1 meter wide, the drawing will have 10 1 cm squares across. To have the same number of squares on the canvas, each square will then measure 10 cm. Many artists use the blue color pencil because it is the least obtrusive color and easy to cover or erase.
Copy the major lines and shapes from the drawing onto the canvas using blue color pencil. Now you have the same grid on both surfaces. They are different sizes but the ratio is preserved. The grid now serves as your powerful means of reference for where the lines and shapes belong on the canvas. Begin by copying the major lines of the top left square. Then move to the top square next to it. Continue copying the major shapes and lines from square to square until you have drawn the entire composition. Now you have the entire drawing copied in blue pencil onto the canvas, over which you can add your paint or other mediums.