I created/photographed him a few years ago so he's not the best quality. I also deconstructed him quite a while ago so I wont be able to add any better pictures. His transformation is somewhat heavily based on this model https://youtu.be/2-PUGCUxRCQ
Here is Megatron.
The LDD file also includes a mini Optimus.
I didn't actually make this LDD. Someone made it after seeing mine and posted it online.