Do you think learning one new word everyday can improve your writing skills in the Writing module?

Yes, of-course, learning one new word everyday can help to ameliorate one’s writing if the words ,one is learning are relevant . For example , if the student is learning the vocabulary for tools used by doctors or instruments used by musicians or something like this, then it is no more than a wastage of time in terms of IELTS writing . Thus, learning required words is crucial.