Progress post:
Really happy with the 3rd one. I'll probably get finished the last 2 pairs tomorrow, I'm thinking that probably it would be wise to just focus on getting the values and the volume right instead of trying to get colors right already.
@koalatycoffee I think I'm not getting right the "like how you're doing" pharse, if you are asking about the shading method I can send you the video I learned it from (it's in spanish and i made some tweaks to it). If you are interested I can explain it on my next post, basically the method starts with a black and white rendering as shown in the image i just shared.