Instead of doing solid lines I think I would do dashed lines far enough apart to follow but where the line section would be under the yo-yo. Or the lines could be made so they go through where the middle of the yo-yo would be rather than the edges. I have also been doing yo-yos for a while and can't imagine what 7 thousand looks like, something like what a million dollars looks like I guess-can't imagine that either. Will be looking forward to seeing a posted picture when you finish.