The next step is to take your image and lay it on your sketch pad or paper. I drew out lines indicating my canvas size. Tape your image with masking tape or painting tape to ensure it doesn't move! Click on the images for a larger picture.
Here's where the fun begins. Using a large ruler, begin at the far top left corner of your image, not your paper. Then, find the end of each line on your image, and starting from the corner, make a diagonal line from the corner to the end of your original grid line on your image. Continue this diagonal line onto your sketch paper. Do this for all the lines.
Continue with your diagonal lines until you've made a line for each line end you have on your image's grid. Hope that makes sense!
Now you're ready to draw your image. This should be a lot easier now since you just have to make simple shapes, block by block. Draw your shapes as they appear in the blocks on your original image. If, let's say, the eye is more to the top left part of the block, then that's where you'll place it. Do this until you have your whole image. The edge of your image will also change, as indicated on the bottom line in the image. The edge moved up a tad.
For step 6, simply transfer your image onto the canvas. You can do this by coloring the back of your image with charcoal and then taking a colored pencil and drawing over your image, leaving an impression on the canvas. A colored pencil will help you see where you've already drawn, and helps make sure you don't forget any parts!
Now that you have your image transfered, you can begin the underpainting. I always start off dark and build up light as I paint, layer by layer. Once you've got your image blocked in, begin using medium tones, and gradually add lighter tones. In this piece, I used white, black, burnt umber, cobalt blue, and naples yellow in some highlighted areas. I couldn't live without burnt umber and cobalt blue, and use them in everything I paint!
I'm like many other animal artists when I say I like to work on the eyes first. Once the eyes, or eye in this case, are in, the rest of the painting comes into place more easily. It seems to be a lot harder if you don't get that eye right at the beginning. Once you're satisfied with the eye, continue with adding light and details.