Greetings, sire.
Have you ready the book? It would behoove you greatly.
I would recommend building a platform on which to squat. Squatting on carpet is not the best of ideas. I do understand that if this is your only method, but would highly recommend seeking an alternative.
You are standing much too tall on the descent. You don't really get to depth. A cursory read of the Blue Book would certainly help your ability to squat as prescribed. However, in the meantime, you should find this video from SSC Alan Thrall to be helpful.