As a liquid solution, you solvent infused spice will simply go where gravitation dictates it to go.
Means if you pour it onto a pyrex dish it will evaporate and stick to the dish. but if herbs are on it, the herb with soak it too, some will be on the glass.
That's why, I would stir it often while the herbs and ethanol infused spice in the evaporating phase, and also scrape off any resulting tar from the glass dish wall, onto herbs again.
The process isn't that difficult, am sure if you just do it, you will understand the process better than picturing it in your mind.
Yes you may loose a bit onto wall but not most of it, what I do is before it completely dries, I wipe the sticky spice tar form the galls wall with some of the herbs. this way I nearly do'nt leave much behind.
Also some herbs are very good at absorbingliquid such as mullein leaves, so this help.
Happy enhanced leaf vaping !
Smell like tea n,n spirit !
Toke the toke, and walk the walk !