First, 29 slides are way too long for a FBLA presentation, even if you were not going to use all of the slides. Make sure to be as minimalistic as possible, I only had 4 slides for my slideshow. Some obvious things to cut out would be your table of contents slide and all of your index slides, you shouldn't need to click in your slideshow for you to progress through it. Make the background nice and simple, black or dark grey with white text is very good. Ideally, you would be showing off your game directly, and not just through a video. Consider using a more readable font, and also make your font choice consistent. Ensure you are not using your slideshow as just something to read off of; it should have as little text as possible while still reinforcing what you are saying. If you can, make your presentation flow with the rubric; this will give you a lot of points you wouldn't have otherwise! In the future, plan around not having your team member(s) with you; if you are prepared to present without them, you'll be even better with them. 

I hope none of that comes across as mean, I just want you to be able to improve as much as possible for next year :).