For a movie you need to have.
1. Writer with well written script
2. Director with good skills
3. A good non linear editor
3. Finance at hand
4. Good actors so that it doesnt turn out to be a 'chuss'
5. Crew including cameramen, lighting experts, sound experts.
6. A business model for success.
Just by wishing something you cant make sure it would turn out good 
So as general practice, one can disregard making such a movie and focus on a small gig, a much shorter version with a casual and acceptable look.