Looking at calligraphy depends on lines, strokes, glyphs and composition. Of course, it is too tiring to look at them carefully. Say the lines first. Calligraphy emphasizes the use of a pen in the center, and the lines written should be round and powerful, but in theory, it has not been done. But seemingly powerful, it is the role of potential, in fact, it is just a vertical stroke to take the potential, or nonsense.
Let's talk about the font of strokes first. At first glance, the four works are wild ways, and there is no ancient method to learn from.
Say the composition first. Maybe the composition is arranged properly, but it hasn't changed. Look carefully again, in fact, everything is done very generally. Like inscriptions, Xin, Nian, Zui and Cao are all long words, which is really a big problem.
Here's a couple of words from Yan Zhenqing. Please compare.
What's more, the appraisal you mentioned is worthless in my opinion. In my opinion, I smiled and left.
In short, I hope it will help you. If you don't like it, spray it.