Spanish online tutor. I aimed intermediate or advance levels in spanish to help students in technic words

I would like to teach to improve the Spanish of the students, explain their mistakes and strengths, increase the vocabulary and broaden their knowledge, also it is important to use the correct words for each context, especially in formal context because, no is the same to tell someone: I want, that I would like. They will also learn to use the right words, phrases or synonyms in legal, governmental or business contexts, so that if they miss a context in the real world, it is better to ask.