1. You can go to the Calligraphy Art Museum or something to translate and receive foreign guests. You not only know the language, but also have a professional advantage.
2. Or people who go abroad to teach Chinese practice calligraphy.
3. Stick to your own job and practice calligraphy at the same time. You can learn some calligraphy skills from English writing habits, such as more symbolic and smoother strokes; Calligraphy can also be used to promote English teaching. For example, the simplification of strokes in calligraphy can help students remember words with simplification theory.
If you must pursue further studies, it certainly depends on which aspect you are better and which aspect you are more interested in.