And so, hello there!
I, as many others here, would like to draw your character in exchange for GW money.
I work on traditional paper and coloured or grey pencils. The papers I have are the usual white, grey and black plus blue, green and yellow. The first four (white, grey, black and blue) are available in both A3 and A4, A3 allowing for greater detail, which I will probably spend some time on anyway. Green and yellow are only available in A4.
I do both coloured and greyscale pictures with, as said, pencils of different sorts. You may also ask for marker inking, as seen here This is an old picture and not GW-related, but it shows the basic idea.
I only have two examples to offer, but I hope this will allow me to get more of them for further commission threads.
Coloured, on black A3:

Old, sketchy, hurried on white A4:

More of my works can be found behind this link.