I'm way behind in scanning these. Been busy with work, baby and drawing comics. There's still July, August and September sketchbooks to scan. But I will get to them eventually. He he.
Above, look like a muji gel pen + brush pen. Below, I used a photocopy of a drawing I did with nail polish remover to do this print.
brush pen and watercolours.
G-nib + photoshop
Muji gel pen, ballpoint and watercolours