Yo. Okay so, Imma show yall how to make a statue :D You can trust me on this cus like, I've been making statues for four years, and I've probably made like, 90,000 statues total. So I felt like showing everyone how to do it, because It's really fun!
So, the dimensions of a statue you have to memorize, and they are pretty simple!

Head: 8x8x8
Body: 12high, 4wide, 8long
Arms: 12high, 4wide, 4long
Legs: 12high, 4wide, 8long (legs are together)

I always do the head last, and for the head, two blocks overhang the front, and two overhang the back. Also, for the hats, just make blocks one thicker than the base head stick out.

If the skin you are making has a light flesh color, sandstone works well! Or white clay. Brown clay works well for dark skin usually. ^^

The order that I build a statue starts with legs, then body, then arms, then head, then hat (if there is one). If you are making a statue of a person who is being a model, (standing still for you to build them,) than just frequently go over to them to look at the pixels. When you do the head, you can just ask them to stand on the shoulder. :)

Okay, thank you for reading!!!! Hope I helped! If this did help you, a diamond would be appreciated, so that even more people can learn! Statues are very fun to make, so go have fun! <3 :D