Any kind of practice can help you boost your English skills. The question is, what exactly do you wish to improve? If it's listening or speaking, just writing is not enough. If, on the other hand, you intend to consolidate your grammar knowledge or ability to express yourself in a written context, it goes without saying that writing makes an excellent tool for such purposes. Of course, having your writing reviewed by someone if you're not sure of your own level or ability is also important to get proper feedback and spot your mistakes. Ultimately, it all depends on your personal circumstances and goals. Cheers!

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