Hello Michelle. I read that people have added flour, corn starch, sawdust or sand to give a textured to paint. I would do some practice first. You can also add glitter to paint.
Most people use drywall compound or texture paste to get the raised effect. Then paint when dry. You could try adding paint to drywall compound but it may thin the compound
Would need a lot of mixing to get a good color spread
I've only used texture paste for a project and then painted it. Maybe someone else has done it a different way?
I agree with Cindy about trying a few things first. Flour would be a good place to start.
Here's a video that might help - https://www.youtube.com/watch?v=WfCHtfwUiug
This is a tutorial for making a raised stencil design with vinyl spackling: https://www.sweetpickinsfurniture.com/2015/01/raised-stencil-tutorial.html
You could add anything to hand that will give you a raised effect (Sawdust, sand, salt etc.......) Happy crafting........
Here is a tutorial that should help https://www.pinterest.com/pin/275704808427493228/
Not sure but here is a post on stenciling.https://www.simplenaturedecorblog.com/diy-stenciled-picnic-waterproof-blanket/
You could add things to the paint such as sand