Acrylic gouache on MDF, approx 4x6". Part of an experiment: what if I painted the inside of a picture frame (ie, the inside of the backing board)? Result: it actually works really well!
So this painting began as a simple project and ended up for sale at a coffee shop. I found out recently it actually sold, making it the first official painting I've sold.
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
Fun with gouache! While I was painting this, I learned that "scumble"/"scumbling" are words used to describe the action of dry brush painting, so my detective's name is Scumbles.
This looks simple, but i spent days researching to get the buildings and clothing right. There was also a lot more layers than i planned for. This buildings are still in use, there are different shops in them now. Sadly they no longer have those colorful decorations,
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