Here is a quick sketch of some tubes of my oil colour. I used a coloured pen here after I noticed that my black pen is already fading out.
The coloured pen tried but I didn't really achieve the type of contrast I needed... If not for the borders I indicated, the whiteness of the paper is pretty much felt than the shaded zones.
After I took final shots, I thought it would have been nice I gave it a background but I will leave that for next time.
From the study of these tubes I tried depicting a half filled tube of oil colour and an empty one.. it looks cool and interesting but the contrast isn't really there to give it that solidity.
