How do you get rid of paint lines on furniture?

With chalk paint, you need to use a high quality brush and add a bit of water to prevent lines. As for yellow tint, it is most likely your top coat. You will need to sand it down and start over to get rid of it.

I have found that the cheaper brushes leave these lines in the paint, especially in chalk paint, sand off and re-do. So sorry.

The trick is to use a quality brush.

I agree that you'll have to sand it off and make the paint less thick. Better brush helps too.

I agree with a higher quality brush. I also try to get a new brush with each new project, because I feel that when I wash them and let them dry the bristles never get as soft as they were originally which can result in lines.

Hope these help

https://www.hometalk.com/diy/paint/furniture/how-to-paint-with-chalk-paint-a-chalk-paint-dresser-makeover-44422797

https://www.hometalk.com/diy/paint/furniture/how-to-paint-with-chalk-paint-on-furniture-43277716

https://www.hometalk.com/diy/paint/furniture/painting-furniture-with-chalk-paint-40012712

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Sand this down. Buy a very good brush and apply several thin coats.

You are going to need to sand this down or use citrastrip and start over with a good brush. White paint yellows with a non water base acrylic. I would either buy a Homax spray painter or use Rustoleum spray paint without a brush.

Try rolling the paint instead of brushing. You could also try a foam brush

https://thecraftsmanblog.com/how-to-prevent-brush-marks/#:~:text=%20How%20To%3A%20Prevent%20Brush%20Marks%20%201,but%2C%20I%20believe%20it%20still%20has...%20More%20

Agree with all of above, and select top coat that is water-based poly so it doesn't yellow the piece. Oil-based poly turns yellow. A good brush is badger brush, and they last a long time if you clean them thoroughly after each use.

That paint must have been very thick to get such lines, even with a cheap brush. Might thin it slightly. I use a mini foam roller to do furniture with, and then drag off with a brush lightly to get rid of texture.

Besides using a quality brand-name brush, as others above have recommended, be sure to use a brush that is labelled as suitable for the type of paint that you are using.

A foam roller would work best

***INVEST IN A PAINT SPRAYER***

Can be pricey but totally worth it.

Hello, Sand it all down and start again with a knotting compound for where the yellowing or knots are or use a Stain Blocker) then undercoat and topcoat using a roller or thin Gloss paint and a brush. or use the "Paint Roller Poe " system.

The yellowing on your white paint may also be the tannins coming out of the wood. I had this happen. I'm told if you put a coat of shellac on before paint color, it will keep this from happening. Worth a try if you're going to take the time to sand down for repainting.