What problems did you find because as Paul says its usually very easy....
Edit: video working and seen your problem with the Jetseal you need to apply it thinner because when you buff off your taking off everything except a very thin layer so in essence your wasting quite a bit of product.
I usually apply to the whole car lave for 20 minutes, buff, leave 20 minutes, apply again, leave 20 minutes, buff
You also do not have to do it in circles you can do lines which are in line with the car panels which may help to minimise the amount of product you use, also press down on the applicator when you think you need more on there as you will find you get some out of the applicator.