Watercolour pencils and gouache on A4. I did this today at a Urban Sketchers meet up in the National Museum of Scotland - although, I guess, strictly speaking it does not fulfil the urban sketching requirements :D
One of my Swirly Designs, illustrated with different tools such as Graphite, Aquarelle, Ink Pens and Ai & Tablet. Sometimes sheer Vectorillustration/design.
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Urh.-Nr:1811955
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Copyright by Carolina Matthes
I stated with a rough pencil sketch then inked it with a brush pen and colored it with watercolor and gouache on a watercolor postcard. Reference I used was this excellent photo - https://www.pexels.com/photo/tree-wild-squirrel-monkey-97827/ photo by Mike from Pexels.com