3D Design- Getting Plastered Again

I've still been catching up on some work I missed from a couple weekends ago, and it didn't help that my 3D Design professor didn't show up for our class on Wednesday.  It may have been the fact that I had reminded him we didn't have school on Friday and he didn't realize Wednesday was a Friday schedule, but whatever.  Now I'm still behind, but I don't know what to do with it.

After I filled my foamy duct-taped mold with plaster and let it sit for a couple days, I went back into the workshop and peeled away the mold.  And when I say peeled, I mean scraped with my fingernails to get off.  

This is the end result:

Turns out, the fact that I had to fill one of the rectangles on top by itself wasn't really a huge issue.  It all worked out!  The biggest problem is that there's some holes along the edges, and I guess I'll have to fill them in with plaster by hand.  I would've asked my professor about it, but since he wasn't it class, I couldn't.

And wow, can I just say, I thought it was hard making that square to go into the mold on the side.  Getting it out was like, 17 million times worse.

Apparently, the next step is to sand everything down, make it all even, and then we're going to paint it.  Lucky I'm taking this painting class and already have the supplies, right?  These art classes are starting to get really expensive...