I can show you how to do this.
With Photoshop,
- I can create a template for the two controllers
- Shapes on the bottom layer
- Insert your graphics in the layer above that, I'll show you how to bind your designs to that layer shape (or leave it in a clipping mask), or leave a blank layer already bound in there. That way you only have to copy your art into it
- Shadows and highlights above that layer
- Buttons and solid objects on the top
Then it's exporting to transparent png, a few simple settings.
Aside from just telling you how to do this, I can also create a pdf with images and text.
I've been working at multi-million dollar companies in America with demands for perfection and quick turn around times, so this is an easy and quick task for me. I also work for an independent game studio, so I enjoy that aspect as well.