The model of the knight chestpiece was referenced of google images and put into Fusion 360.
Firstly, the base of the knight chestpiece was skteched out,
Next, the base was revolved by using the Revolve tool.
After that, the rest of the knight chestpiece was sketched out.
Which is followed up by the extrusion of the body.
The base of the knight chestpiece is then made hollow by using the Shell Tool.
Finally, the edge of the body of the knight chestpiece was chamfered to create a slight bevel.
Above is the sketch for the base of the music box.
After the base is extruded out, the tabs are then cut out so that the other pieces can fit together like a jigsaw puzzle
The sides of the box is created in a way similar to the base, just that there are a few extra steps, which is to create the hole for the lid to open along.
The box is then assembled together by adding the other two side plates.
Finally, the lid is added to complete the box.