Honestly getting like ultrecht or a lil more expensive ones help, and figuring iut the right amount of slow dry medium/ water can help you get some nice layers to work with. I use them on unprimed wood and they come out nice.

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Thx-->. I invite you to view: "Magical square between 17-sided polygons (Gauss)". Artwork of Rivismo (© Ramón Rivas / Spain).

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