I would say no, you can't use "prestigious" for a person. When we say that Harvard is prestigious, we mean that it confers prestige on people who go there. With that sense of the word, it doesn't make sense to describe a person as prestigious: what would that even mean?
Wiktionary suggests that typical things describable as "prestigious" include "award, prize, job, address, school, university, college, club, journal, firm, institution, office, etc." but not people.
As an alternative, you could talk about the person's high status or high reputation. I think you'd be more likely to talk about the reasons for their high prestige: e.g., if they've won a huge number of awards, you could say that they're "the most decorated person" or, if they're a sportsperson or academic, you'd tend to talk about their success in their sport or their intelligence. Other good words to use include "respected", "admired", "celebrated", "renowned", "reputable", or "eminent", as suggested by Gary Botnovcan in a comment.
We can put adverbs and adverb phrases at the front, in the middle or at the end of a clause.
The front position of the clause is the first item in the clause:
The end position of the clause is the last item in the clause:
- Why do you always have to eat so fast?
The mid position is between the subject and the main verb:
- Apples always taste best when you pick them straight off the tree.
Best Answer
As kiamlaluno tells you, it is non-Standard to use good where an adverb is called for.
However, there's nothing wrong with using it with feel. Feel is ordinarily used as what grammarians call a copula: its complement is a quality attributed to the subject, and is therefore an adjective, not an adverb:
And (again as kiamlaluno tells you) “I feel well” means you don't feel sick, but healthy.
If you use feel with an adverb you are probably employing it not as a copula but as verb of physical action. “I feel badly” means your tactile sense is impaired.