That is really entertaining to learn about cat's behavior, as a child we had a cat and it is a truth it can sit hours and clean himself especially in the morning. I love to watch it.
The painting you did is absolutely beautiful, I love that rainy town with nice old building on both sides and people rushing home. the cat in the middle of street that seen another cat, is it an enemy or friend. That is typical form of their back once they see an unknown visitor :)
thank you for your nice comment @stef1