I have had a few enquiries as to how much wax is too much when applying it. I took a few sample pics to hopefully help you guys out.
My friends GTi served as the test bed. Here, freshly polished hood.
Foam applicator pad and jar of Vics Mayhem (soft wax)
After gently pressing down the applicator onto the wax, this is what the pad looks like. A very light coating of wax. If it was a hard wax, you would gently rub the applicator across the wax.
I apply the wax in small circles. Notice that you can still see the reflection of the lights after the wax is applied. If you can't see the reflection clearly, its too thick. When you apply it, it should look oily, but still transparent. Each wax has different rules for when to remove. Check the instructions for your particular product.
Hope this helps.