In a line art transfer free hand colouring printing technique, a design outline is first generated on a transfer substrate using a glutinous ink and is then applied to a surface, for example the front of a T-shirt. A user then applies colouring and/or texturing in and/or around the design in accordance with personal choice to create an image and thereafter a finishing is applied. The finishing comprises a sheet releasably carrying decorative transfer elements which upon application to the image highlights the outline only, the remainder of the image remaining unaffected by the finishing.