you have good ideas,you cross your blocks well. i like the tires-cannon idea.

This is neat, not sure if I like the red though...

Good I like it.I really like the gun in the middle and the minifig was cool.the pictures where blurry and i think there might be a bit of mega blocks in there but im not sure.In relation to your comment on my Laserbot is mad!!!!! im sorting my lego out at the moment but im going to make a second version after that.