this is what I've been working on

Our church helps out local elementary schools, and one in particular has a room that they wanted to make into a science room but they don't have any money to furnish it. So the pastor in charge of outreach decided we'd do our own Extreme Home Makeover version of a science room and asked me to design it.
Of course I thought: uh, are you sure you want me to do it? And then played it cool like I do this kind of thing all the time.
So below are the concepts I turned in today, apparently the room is really big and will be divided into four separate spaces. Each space will have lots of information panels about each concept too, I just didn't bother including them in the pictures.
I'm a little worried that he'll look at these and say "hmmm, interesting. I think we'll use someone else, thanks though."
If anyone has any ideas on how I could make them better, please comment!