Your website does look really good, I do like your color scheme as it seems very FIRST friendly
Well for one, you guys should focus on updating your pages with new material and start compiling some things such as your resource page and your team history, and for history, even if it is just information from last year, people would love to hear about your guy's accomplishments.
When I first look at your homepage, I see a lot of blank space for either more material that could be put there or space that can be shortened to make the page look more professional and give more information at a glance.
The same goes for your header, I would maybe enlarge that a little bit so your text for your team name doesn't get cut off and the header can look more concentrated. As well as some of your pictures and visual media that you have on your site could be centered a bit so that it looks more organized and visually appealing.
Great job guys!