The biggest problem with LEGOS is that you have a limited supply of colors to work with. I only have the following colors to work with:
Red, Dark Red, Yellow, Dark Yellow, Green, Blue, Indigo, White, Brown, Gray and Black.
So, unless I decide to paint the LEGOS, the colors will be off.
On top of that, I hold a very limited supply of Green and Brown, so the use of them HAS to be miniumal.
Furthermore, the green is more limited to a small flat stand to build on and being the "glass cover" for cockpits. Not to mention that the green pieces that don't consist of that are rather large and flat.
The Gray pieces could really help me out on the design for the jaw of Cera and Spike as there are certian pieces that can easily be used for the main build of the front for a ship. (Whether it be one for sea or space. It could also be used for the front of a plane or jet.)
There are also certian body parts of the charcters to take into account. My biggest problem is definately going to be Cera's "armor" that goes around her head.
The final thing to understand is that I'm working with a bunch of squares and rectangles, and they can only fit in certian ways. Unless I plan to go big, and break apart the model when I'm done, you're more than likely going to see something that's "off" in design.
Certian things could help me out. I do have White pieces that already have an eye painted on them. However, this would mean that the eyes would then only be seen from certian angles.
As you can see, there's alot to consider when building with LEGOS. This definately won't be easy. :^.^: