It's best to practice writing brush first, because hard pen calligraphy is based on writing brush. If you practice writing brush first, you can directly buy famous works to copy, and if you practice hard pen, of course, you should practice regular script first ~ As for the saying that writing brush is not a problem when you practice hard pen, it is not necessarily correct, because writing brush calligraphy is mostly ancient and traditional, and it is generally impossible to write it out. Hope to adopt it, thank you ~
Countermeasures? The deepest lesson my calligraphy teacher taught me is that you must observe more when writing, carefully look at the differences between the words written by famous artists and your own, and then correct them. Just practice slowly.