Here is a link to a UHK layout I made for
http://www.keyboard-layout-editor.com
That can be helpful to create layouts and share and discuss them with others. Also printing out layouts for learning is nice with this website, so one can see several layers on one page.
In the layout I used color coding’s for the fingering I use (index finger on qwerty-c). Colors are lighter on the home-row and are darker for keys which are harder to reach.