The landlord must be an adult. If you still have this spontaneous hobby of calligraphy, I think you can go further. In short, you can take old French directly. The ancients generally wrote with a brush, but because of its extraordinary skill, it can be used as a small letter, and I personally think it is a good choice to learn pen writing with small letter copybooks. Cao Zhi's Ode to Luoshen in lower case in Wang Xianzhi, with thirteen lines in jade edition, is known as the first lower case in the world. Although there are not many words, writing well is undoubtedly of great benefit to practicing Chinese characters. In addition, I recommend the lower case of Zhao Mengfu, a great calligrapher in Yuan Dynasty. His small letters "Ling Fei Jing", "Luo Shen Fu" and "Tao Te Ching" are all good learning models. Of course, you need to persevere, read more posts, understand more and write more. Over time, your calligraphy will definitely make great progress!
If you are not satisfied with entering China now, you can learn authentic calligraphy-brush calligraphy, and the regular scripts of Tang, Yan Zhenqing and Liu Gongquan are all good choices. Running script recommends Preface to Wang Xizhi, which I think is the best model for learning running script. Of course, if you learn more and more, I believe you will know more about many problems in the future than I do, so I won't say much here.
Back to hard pen calligraphy, I think brush calligraphy has absolute guiding significance for hard pen calligraphy. If a person's brush calligraphy is good, hard pen calligraphy is definitely not bad, and vice versa. From this point of view, Pang Zhonghua's value is more reflected in his admiration for hard pen calligraphy.
A little humble opinion, I hope to help the landlord.