Creature design

I am recently into creature design. I have studied some different kinds of animals. So this is something I gathered and came up with the design. My problem is that I am not able to make the body part grow from the body (for example look at those horns, they are like attached). Second is body weight balancing. This piece is still in process, since its my first time refining a creature (cuz I have done lot of thumbnails only) I still have confusions at where to improve. Any other suggestion and critique is appreciated too!