32. There is no 'right' way of doing something
Although this is more labor-intensive than certain other forms of photography and editing, you can consider it the labor of love. A photo can turn into any other type of art material like a painting, sketches, or pop art, whichever you like. There are no rules in creating arty, as we have said before! What matters is that you enjoy the process and the final product of your labor.
To create a canvas, we'd suggest taking the photos with a zoomed-in lens at a distance. Doing this will help flatten the image, making it easier to use as a sketch. You don't have to worry about the 3D elements in this case. In your editing software, you can add any colors or simply turn it to black and white with a click. There is also other effect that each application provides that you can test it out.