This looks incredible! I’ve attached a picture with my feedback, the orange looks perfect! On the muffin, the light on the frosting would be on top of each frosting layer, ( can you see my orange line there?)and the ground shadow I did is smaller, but depends on how big would be your light source.
On the coffee pot you translated the shadows very good, try just to use the “distort tool” to adapt the shadow on the ground. (By selecting your shadow and clicking on the arrow tool, you’ll see several functions)
I hope this helps! But amazing work! I love to see your versions!