So... I'm not really into Green Stuff work usually. I also am not one who always finishes his Projects. Hopefully sharing my stuff with you guys will inspire me to keep going this time.
This is practically my first real attempt at modelling with green stuff apart from filling gaps. I'm pretty pleased with the outcome so far.
I have destroyed the Knight as best as I could

Not sure how and if I should implement more fleshy bits on it before I call it ready for painting.
I also have 2 more Knights to go. One standard Imperial Knight which will need even more Conversion work and one Armiger Moirax with dual Lightning Locks.
My Idea behind these Knights is that they basically became Daemon Princes which fused with their Machines. The original Flesh growing and spreading out and creating a corrupted mixture of bloated, rotting Organs and Technology. Enough talk, here is how far I got with the first one: