I'm returning to Lego as an adult and struggling with what I thought would be a small project.

Please tell me if this is off topic but as it has a hard answer of no or this is how I though it would be ok. 

What I'm trying to do is change the pose of the Lego mario yoshi but the way it is built I cant see any way of moving anything. 

the goal is from this [![enter image description here][1]][1] to this [![enter image description here][2]][2]

Can anyone tell me how I would go about this or is the original design to limiting to make it a possibility.


  [1]: https://i.sstatic.net/9fDJK.jpg
  [2]: https://i.sstatic.net/wMwCf.jpg