If you are an open person, you can practice Yan Zhenqing's Yan Liqin Monument, Duobaota Monument and My Nephew Memorial Draft (in block letters).
If your font is introverted, you can practice the inscription of Liquan in Ou Yangxun Jiucheng Palace (block letters);
If your handwriting shows no trace, you can practice Liu Gongquan's Mystery Tower Monument and Shence Army Monument (block letters).
If you are cautious in writing, you can practice Zhang Xuan's epitaph and Zhang Menglong's tablet (Weibei).
If you really can't make up your mind, practice your facial style, because Yan Zhenqing left a lot of words, but it's not good to write too much. If you practice well, you can practice running script, such as Wang Xizhi's Lanting preface, dragon copy and Dingwu copy.
You must use a pen or wooden pencil when you first practice hard pen, and you can use an art pen when you finish writing.
Hang in there! Come on!