I mainly studied The History of the Wangs, especially the early moon posts and menstruation posts.
I don't know what stage your calligraphy has reached. You can send a work and take a closer look. It is very important to find and understand the teacher's instructions, which can avoid many unnecessary detours.
Wang Xizhi's cursive script is based on Cao Zhang, so he can achieve something if he wants to learn. In the long run, he should start from Cao Zhang, and he can learn from Song Ke's "urgent chapter" and "book spectrum". There are all kinds of cursive and regular script, which is the ladder for the two kings to go to school. Of course, this is already a higher requirement. According to this standard, few contemporary writers who write two kings are qualified.