Love Faber-Castell Pitt Pens. It's great for mixed media and shading onto canvas or watercolour paper. In the above video, the artist shows how great it looks in his sketches and drawings. Lovely lovely pen!

Also, I have been following Christy Tomlinson, mixed media artist on her videos and online workshops. She's absolutely fantastic and really adore her techniques and art works. I look up to her and always love watching her video tutorials and "how -to"s.

Here's one:

And another: