I use a few different mediums depending on the style.
Here are some examples below:
- joint compound (also known as drywall mud)
- joint filler (also known as wall putty, polyfillerm or spackle)
- topping compound
- modelling paste
- impasto
*each of these have their own qualities such as thickness, drying time and ability to mix with colour.
I have 2 hours of video tutorials for step by step instructions!