Think about grammar and usage for a moment. Is there a rule that confuses you? Is there a grammatical error that sets your teeth on edge when you hear or (worse yet) read it? Are there particular words whose meanings confuse you?
Look up the correct answer, rule or explanation. Try using Google, which will bring you several possible sites – choose the most interesting one, or use all of them.
For example, the words bring and take have somewhat different meanings. David Sperling, on Dave’s ESL CafĂ© site offers a lengthy explanation of the different shades of meaning, as well as contrary views.
The very common verbs bring and take are sometimes troublesome for learners of English. One reason this happens is because bring and take have almost identical meanings but are used for different "directions" in English: bring shows movement toward the speaker, but take shows movement away from the speaker. If A needs something and wants B to get it and carry it to him or her, A says, "Could you bring ___ to me?" (or "Could you bring me ___ ?"). If A has something and A wants B to get it and carry it to C, A says, "Could you take ___ to C?" (B then takes ___ from A and takes it to C.)Now write the poem inspired by the answer or the explanation, or the word or phrase you started with, or even the act of checking the proper usage of your native tongue!