Do not use myself as the subject of a sentence. Myself and the other -self words—himself, herself, ourselves, etc.—are reflexives, and reflexives cannot be used as subjects. Nominatives should be used as subjects. The nominatives are I, we, he, she, and they. You is both nominative and objective, so it can be used as either a subject or an object.
Incorrect example: Myself and the rest of the team will be working on Saturday.
Correct example: The rest of the team and I will be working on Saturday.
The verb is will be working, and the subject (who or what will be working) always needs to be a nominative, so the correct pronoun to use is I.