IAS371: mask + resist

I'm definitely too impatient for working with watercolour. I keep slathering colour then madly trying to take it off again. The other problem I'm having is using cheap watercolour paper that warps. Experimentations with mask and resist: oil pastel, crayon, masking tape, masking fluid, sealant and melted crayons on grounds made of coffee and ink. I'm trying to understand value more so I made a gradient chart.