I have gotten a bit confused about the order of events to finish the outside of the boat. I have done the first couple of fill coats on the hull and deck and am now ready to feather the coaming glass into the deck. Can someone please give me step by step IDIOT PROOF instrucions from the stage that I am at now to the final sanding? I am worried that if I sand into the glass when feathering I will be left with those annoying white spots (I have a few below the waterline) how do I avoid this?

Thanks for the help,
JJ