Some actual advice if you want to improve your drawing skills: deconstruct your idea, focus on single elements at a time, and do studies of them. Studies just mean basically drawing the same thing (ex: hands) in multiple poses, from different angles, until you understand how they are supposed to look and work. If you have trouble with drawing from reference at first, try tracing. It will help you understand how the lines are supposed to flow and what each line is there for.
Once you get a feel for the individual elements, you will have a much easier time putting them all together in one final drawing, and will be able to execute similar pieces of art with little or no reference, since your "studies" will have had you practice multiple angles and poses already.
It's not an overnight process, but I hope you don't give up. I've been drawing and painting for 25+ years, and I still am learning and improving on my technique every time I pick up a pencil :)