Approaching discussions on Bitcointalk with seriousness and a genuine desire to contribute helps in achieving your goals. By demonstrating a sincere interest in the subject matter, you can establish yourself as a valuable member of the community.
I can see that you are also new here, welcome aboard. But please don't write in bold or colored/capital letters. It really isn't necessary and makes a post stick out unnecessarily.
I could have done that to this point as well. Even though I don't have a mentor, sometimes I always pay attention to the high ranks in writing. That could be my guide to adapting. Even though I know I won't be able to match the writing style, I try to be myself by imitating what's good here.
You don't need a mentor or to copy someone else. Just be yourself. Preview your posts and correct errors before submitting them. Ensure that the text is both factually and grammatically correct. The last step is ensuring it looks good and is pleasant to look at. That means, no big walls of text without any order or structure. Create natural paragraphs where it makes sense and would make the reader stick around and keep reading.