How to effectively correct typos in calligraphy works? "urgent"

I also often do some calligraphy and Chinese painting works. In this case, I take the following two methods: first, cross out the places that need to be changed with a knife, stick them with glue or paste, carefully handle the joints, and then paint them with white paint. The second is to directly whitewash the places that need to be changed with white powder. I say so, you should think about it before using it.