Once you have your drawing finalized, coat the back of the paper completely using your pencil. We're making transfer-type paper here. Then tape your drawing onto your coloured background sheet and pass over all the pencil lines using a ball-point pen. Press fairly hard.
This will transfer the graphite onto the coloured paper.
So once you remove the white paper you can see the clean transfer of the drawing
onto the construction paper.
We used black India ink (as it's such a rich, true black) for our paintings, but thinned down acrylic or good quality tempera paint would probably work as well. You can also add smaller, more intricate details, using a black marker.
Here are some Grade 8 results- they had alot of fun with adding all sorts of fun and spooky details.
I find this age group has such a vivid imagination!