The lesson
Put the decision and the dollar figure on slide two, then spend the rest of the deck defending it.
A budget request rebuilt as a deck by Pitch Unfairly. After a cover reading "The Moon, before this decade is out.", slide two says "One decision: commit to the Moon." beside a huge "$531M", with "$7B to $9B" and "Before 1970" underneath. Later slides cover why now, four options with one marked "RECOMMENDED", and a 1X versus 10X rocket.
The figures belong to the story and aren't evidence. Don't borrow the space imagery. Keep the order: ask, urgency, options, recommendation.