Here are some of the products that I use to make my digis and colorings... 

I use copic perfect coloring paper for most of my coloring. 

This paper is very thick, and lets you blend so easily with copics... you can build up a lot of interesting color with this paper, and sometimes even fix mistakes as if they were never there!

https://amzn.to/3cLRMsp

I also use xpress-it blending paper... this paper is similar to the copic perfect coloring paper. Again, it is very thick and allows blending.

https://www.amazon.com/gp/product/B0044JPR7E/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B0044JPR7E&linkCode=as2&tag=twistoon-20&linkId=11d559c023d0347134f2cea69b1e2bef

The links on this page contain an affiliate id, this will not charge you anything, but if you click them to make a purchase to Amazon, they give me a small commission, which helps keep me in pencils :)