Ok well I was taught to flip your wrist under and focus on keeping your elbows pointed outward. This will require flexibility of your wrist in which you will have to practice.
I love the front squat. I hold it in the standard grip (such as when you finish a clean), check the pics from my lower body training to see how I hold it.
I have sen those pics, it doesnt show the grip all that well. Your form is shown well though. Just not the grip from what i remember.