I think of any form of creativity like sentences. You can write it normally without consideration of being grammatically correct. Does the lack of commas, or capitalization make the sentence unreadable? Of course not. If it's still English, and it's a language you understand then you will have made a legible letter. Albeit not professional, but legible, however that shouldn't stop you from trying. The little things even if you know that nobody will notice, or care as much as you do still matters. It's satisfying to perfect the crafts you love.

The many times I loathe doing shading, because it looks fine without it. The many times I am happy that I shaded it, because I know it looks better with it than without it.