I can tell the painter likes vibrating popping colors, and takes reframe form other painters. In the painting we can see a contrast of yellow and blue. Also, in the background we can see a sky and silhouette like the famous painting “Starry Night” by Leonardo DaVinci
Regarding the anatomy of an arch, what is the springing line? The springing line is an imaginary line between where the curves of the arch begin on each side