Hi, Kate!
I just tried this system for block dyeing and it is just drying by me...
The difference is that i pressed oak leaf into vegetable tanned leather. The leaf impression is stunning in detail, but there is very minute shallownes of it - the leaves are a thin thing :-)
So when i try to block dye, some surface that is pressed down, is also colored...
I am pressing another leaf into leather right now and i will try the following.
The leaf will be pressed into wet vegetable tanned leather for about half an hour.
After that i will block dye it right away when it will be still wet.
---Is this okay, or is it better to wait for the leather to be dry inside the press?
IMO it is harder to dye embossed leaf with wide embossed surfaces, compared to deeply tooled leather. Is there any other suggestion not to paint over the embossed surface, or is the only answer: practice makes perfect :-) ?