How do you create separate pixel layers for Red, Green, Blue?

[PGH_Sky]

I am trying to fix an excessive green cast in an AP image. I viewed the video by Mr. Ritson and find it, and many of the other videos extremely frustrating. Note that (in his video) Mr. Ritson is adding an adjustment layer to the green pixel layer in this video. When I open my Light files they open with a curves adjustment, levels adjustment and background layer. There are no R,G, or B pixel layers. I have probably spent at least 2 - 3 hours searching to find out how to display these R,G and B pixel layers so I can get to the starting point of this video.  In my own job, I teach way below my expertise level to students in other specialties. You need to create a starting point and intensely cover the basics of how you got there. Mr. Ritson knows this software intimately. Unfortunately, he is not starting from scratch and this makes the videos extremely hard to follow. Dumb it down because most users will take a long, long time to get to Mr. Ritson's level. I personally don't have the time to do that for a hobby.

 

I DO VALUE Affinity Photo because I see its potential. I have never used Photoshop. I have had Affinity for some time and every time I try to do simple stuff, I get lost in the videos. There are too many illogical twists and too much complex detail. Have you thought of having a mini-series of beginner videos done by someone who has no experience with photo editing and who is a relative beginner at Affinity? Mr. Ritson's approach is great for advanced users. Then there is the rest of us...

 

For now - how do I get from my screen to the video starting point (both my screen and video screen are attached.

[Komatös]

Hi, @PGH_Sky and welcome to the forum.

In this video @James Ritson shows how to create the layers.

Maybe it helps you.

https://affinity.serif.com/tutorials/photo/desktop/video/504455079/