What Westend said is what I do.
I do use self-leveling for everything so it levels itself. I've never had an issue with vertical runs. I put on the smallest bead I can and don't touch it until the next day (even if it is too much) so it has time to settle out and get a bit firm.
Once it's firm, I wipe it with a soft cloth that is very wet with mineral spirits.
When I wipe it wet with mineral spirits I can easily remove the excess and then when it dries the second time it smooths back out like glass.
I do spot touch up locations that need more and them wipe them the same as above once it has gotten firm.
If you wait more than a day to wipe it down, or maybe two depending on humidity, it will take work to get it done.
I have been able to apply it in the morning and then wipe it down that afternoon if it very hot dry weather.