yes, yes it should.
It is 2 words
The word "not" is typically not capitalized in a title unless it is the first word, a proper noun, or part of a hyphenated word.
The word desperate hyphenated
Light-Headed is a hyphenated word.
The word "self-confidence" is hyphenated.
No, "hardworking" is not hyphenated.
Left-handed is a hyphenated compound.
Both the full word and the hyphenated form are accepted.
"Field" is not hyphenated.
Yes it should be hyphenated.
No it shouldn't be hyphenated.
No, "homework" shouldn't be hyphenated.