At the beginning of the sentence and when it forms part of the proper noun.
Example:
Great Summer Artist Workshop
No you do not capitalize artist in a sentence
You should capitalize the first letter of the sentence "Who is your favorite French artist?"
do you capitalize the word protestant
It is not necessary to capitalize the word "yo".
No, you do not capitalize the word drama.
Who is your favorite French artist (end with question mark).
Yes, you must capitalize the first word, UNLESS it is a small word, such as "It" or "A" or "The".
Unless "it's" is the first word, there is no need to capitalize.
No, you do not capitalize the second word in the complimentary closing.
Yes, you should capitalize the word after a comma in a sentence.
In a title, you generally do not capitalize the word "for" unless it is the first word or part of a proper noun.
Capitalize the word "to" in a title if it is the first or last word, a proper noun, or a verb.