If you want to write lyrics, I suggest you add some QQ groups about the exchange of original poems first, where you can learn a lot.
In addition, you can look at the archaic words of Lu Guozhan and Fang Zhouzi. They are not entirely written in classical Chinese, but they contain a deep feeling.
You can also search for some Chinese paintings, calligraphy, murals, landscapes, scrolls, archives and other materials, which is also very enlightening.
If you need pictures, you can search in Baidu pictures! Font, but nothing, regular script or something is actually ok.