Bespoke solutions in GIMP

I have a .psd file given to me by my editors of a jewellery ring with a number of layers and masks. Using this file I want to be shown how to rotate/move image of ring with its layers (masks, colour editing layers). Also make a ground reflection layer and ground shadow layer. This is a tutorial in GIMP. You are to screen record and add voice or text (English) over explaining the process.