As well as the coloured pens there's a clear one that just delivers the sparkle over what ever was already there. I've used it on my combined entry for Moving Along With The Times 'Thank you!' challenge and Allsorts 'Clean and Simple' challenge #188.
I've coloured using Copics with some pencil shading and instead of having white highlights on the boots I've used the clear pen.
As for the desk, look away now unless you are of a stern constitution, it's not a pretty site.
** Kate **