To answer your question without having to read a hub:-
1. Quality hub according to HP
- of good length,not too short, maybe somewhere over 400 words. Google likes a lot of content
- good grammar, error free
- Useful and informative, interesting
2. Keyword enriched
Your title must be relevant to the content and content must have the words used in title. At least the first paragraph must have they main words in that are in the title. The body of the content must occasionally have those main words (the subject) but not too much. Using other key phrases that relate to your main phrase. These are the words and phrases that searchers will use to find you.
Think about your subject and think like the person who is searching for your content. What are the search terms you would use to find an article such as yours? Make your title unusual but to the point.
It doesn't matter what keywords you choose to use, just use them wisely.