My Impulse pieces use raised slip dots on an angled/vertical surface of a pot to break the flow of a glaze.
The real trick to these is in the slip application, which is largely down to the thickness of the slip.
The glazes shown at the end are all on glazy, except Borealis - https://glazy.org/u/oldforgecreations...
Guide to making Slip: https://www.oldforgecreations.co.uk/b...
Check out my glazing videos for guides on how I apply the glazes, the idea is very similar to the Pebble/Peacock Eye pieces.