I think that it doen't waste your time. Although I don't good at english, not influence, but if you really want to understand it, you need
to learn all about this language. Do you agree with me?
Pardon me that I copy your writing stlye.
I like colors and I want to use them on my passage.
Finally, I convince everyone that PUNCTUATIONs are also as much importatn as gramma, vocabularies, and so on. Don't waste your time to do other things. Spend it on punctuation. Thanks.