This is a very detailed instruction for homemade Moscow Mule; if you are a beginner for Moscow Mule, this is the video you are looking for. I may list some video instructions in my website. If I have to choose the most helpful one, this will be the one I prefer.
As a wonderful step by step guidance, it is very suitable for you to show yourself at a home party. But a little different from my doctoring: He added ginger beer first. What I suggest is adding Vodka at the beginning then shake with ice cubes. Topping mug with ginger beer is my last finishing step.
But who knows maybe this may do some better taste you can try as this. Not something crucial.