I thought about how nice it would be if you could place the framed block with your main hand and it instantly takes the texture of your second hand. Is that possible or is something like this already implemented?

This would be a nice quality of life improvement.

Greetings (:
Love your mod

Seems that it worked. In which version it'll be added?

Next version, no idea yet when that will be.

I just tested the feature and I am happy. Thank you!

Sounds like a useful addition, I will look into it.