Objects rely on context and although you say it is big there isnt any evidence to show it is. It seemsyou have executed a half decent cropping job and maybe the next step would be to place an environment around it to explain more what it is or half a laugh with it. Regards. +tmy+
I think most of the above comments are great critique. Nothing to show size, too much light, angle is important, but don't be discouraged, just keep shooting photographs and having fun and in that passion great captures will emerge.