That seriously takes some control over one's own handwriting before it is really possible. Artful lettering has its own learning curve. Plus I'm not sure this is going to have benefits over any other sort of art training.

Additionally, I think this bypasses the real goal of writing - you need writing to be both efficient and legible to others as a base function. This is why hand-written notes to myself often are sloppy and without sentence structure, notes shared with others generally meet the above, and sometimes my writing is pretty and nearly typeface, with the "a" and the "g" written as it appears here. I think folks really need just that middle level of writing. I mostly do the pretty stuff so I can occasionally use it in artwork if I so choose.