This adorable stamp is Dexter on a bike (CM068N). Motivet supply a coloured image of the stamp and I used their suggested colours for this card.
The background is a SU paper as is the label punch and sentiment.
I tend to mainly stamp on watercolour paper if the image is to be coloured in and used a mixture of Tombow, Stampin Up and Marvy Le Plume II markers with the aid of an aqua painter and blender pen.
To help choose the right marker I have a reference chart with the name of each marker next to a small block coloured in to get an idea of the exact colour. It saves a lot of time and trying out each marker on scrap paper every time to see if the colour is the right one.