I got my form checked by a trainer today, he made a couple of good points:
1- Don't arch your lower back too much while coming down.
I looked up online, and this article kind of supports it, although I have no back pain right now, increasing the weights may cause it in future. How can I maintain a neutral spine throughout? There is no uneven loading, and I am not leaning forward, but I compared my form with his on the mirror, what I noticed was he was a bit straighter than me. I will try the big breath technique next time though.
2- Keep a slight bend on your knees when you come up, or it will cause excess load on the knees. Is that even true?
3- Your elbows are coming back, this may be the cause of pain, though I have noticed my right elbow is a bit forward than the left elbow. How do I improve this? Right now I am using a medium grip with elbows pushing down and forward (but I goes away when I squat).
Looking forward to improving my form on the next workout, all your suggestions are welcome.