I really like how you drew the toa here. Even though your not doing the comic anymore it's still nice to see artwork of these guys. I feel like there's is not much fanart of the toa from the 2nd and 3rd movie. Especially for vakama.
You could try simplifying their parts. My drawings never replicate EXACTLY what the toa metru look like. You could focus on the main shapes first and then work your way up to filling everything in with details
Yeah, i notice you kept their bodies shapes simple and gave them more cyborg looking designs. It's was a vary good idea to do it that way. I think as long as the faces, colors and armor look close to the originals then it's ok to give them more organic designs. XD It will make drawing then a heck of alot easier. I try to do it that way, i'll make sure to it a bit different so it doesn't look like i'm copying you.