I have been in the process of palate expansion for about a year. At first I was fairly inconsistent with it. I started lasted January with a mandibular palate expander, and then in July I started with the upper appliance (homeoblock). I started the treatment at the age of 18 years old and I am now 19. In the attached picture the left picture is a few months before I began expansion, the right is from a few weeks ago. 

I took starting measurements of my zygomatic arches to track progress (if any). The initial measurement on 1/1/18 was 137.5mm on the widest part of the cheekbones. As of 2/2/19 the measurement now reads 144.25mm. Both measurements were taken using an outside calipers and I measured the inside of the outside calipers with vernier calipers. 

Lastly, when I first started my smile showed about 7-8 teeth. Now I can clearly see 10 teeth while smiling. I am still expanding and will keep you all updated in the future! You can ask me any questions you would like about the palate expansion process and I will try to answer.