Your presentations should be about 10 minutes but not longer than 15ish minutes. Your plans should be well thought out as leaders and not just I said so or I told them so they should do it.
You will also need to watch for spelling, grammar, wordy slides, too much information per slide, too many graphics, too much art. These are guidelines for a professional presentation, others will be given verbally in class as we go over presentations so make sure to take notes and write these down.
You should spend about 2 minutes per slide as a guide but not a rule. Too fast, you loose the audience, too slow, you loose the audience.
You will have class time for assistance, but you need to bring the items to class so that feedback can be provided.