Appreciate calligraphy, please comment on this calligraphy.

This is an amateur work. I have been practicing calligraphy for more than ten years, so let's talk about shortcomings. First, stippling is not full and beautiful. I suggest you read it carefully. Second, the word structure is not good, such as "Jiang, Cheng, Hua", the structure is loose and dumping. Third, there is something wrong with the composition. Chiang Kai-shek can't leave so much white under the first column, which makes the whole work light and heavy.