Pencil drawings can be added to your cover or spine design using the 'PENCIL' option shown on the tool bar menu under “shapes”
Pencil Colour
Select the 'PENCIL' option and change the colour using the 'BORDER' option on the top tool bar.
If you need to change the colour of an existing pencil drawing, select it and change the colour using the 'BORDER' option.
Pencil Size
Select the 'PENCIL' option and change the thickness using the 'BORDER SIZE' option.