Depict Luke 13:20-21 using the watercolor technique. This section of the Bible narrates the parable of the mustard seed by Jesus. It should include a small mustard seed being planted in the ground, and gradually growing into a large, lush tree, symbolizing the Kingdom of Heaven. Representative elements of the era and context like, ancient Middle-Eastern attire and architecture should be visible. All elements should display the distinctive light and fluid appearance characteristic of watercolor paintings.