Holds a lot of promise, but the execution needs some work. The tutorial was very confusingly worded and I didn't understand that you had to make atomic cores in one layer before making the atoms themselves in the next. The molecules also could use more accurate graphics, since I didn't really figure out how to make the latter two in the tutorial.
I hope you keep working on it though! I'd love to see how this turns out when it's properly finished and polished. I think it's really cool and educational to see how stuff is made like this.