My son & I recently picked up several Kre-O TF sets on clearance. As we put them together, we decided to alter each build a bit from the instructions. These changes can easily be made by anyone because we made sure to use only the parts included in the individual kits. First, Optimus Prime: Here's the official version of Prime: And here's the altered version: Nothing super radical here. Just wanted to bulk him up a bit. Also wanted to simulate some of the visual cues from the movie design, notably on the back. Next, Megatron: Here's the official version: And here's the altered version: While most of the parts in the kit are meant to represent Megatron's DOTM appearance, there's plenty of pieces to push him a little closer to a G-1-ish look too. Again, a lot of the alterations were aimed at bulking him up some as well as reworking the proportions. Last, Starscream: The official version: And the altered version: Definitely went well off the instructions for this one. Overall, went for a more G-1 look. Ended up being taller than a Masterpiece Starscream. Anyway, thanks for taking a look.