This is done in an amigurmi type style so generally speaking you want tight stitches. The only stitches that do not need to be tight is the Front post stitches.

There are a couple pictures within the patterns to show placement of things. This pattern will have updates done to it to give pictures during parts of the steps to make it easier to understand.

The exact brands of yarns aren’t nessary. You can colormatch, the main thing is to match the thickness of the yarns that were used to achieve the same look.