Is it appropriate to add strokes to watercolor painting?

Suitable. Watercolor painting with brush strokes looks more advanced. However, the premise is that watercolor painting looks good, and then with smooth and beautiful calligraphy, it gives people an antique charm, which is very beautiful and suitable. Watercolors with strokes are also a good match. Watercolor painting itself looks very antique, and with the brush strokes, it has a retro feeling. This is also a good match.