I used this same method for my DIY styling boards for flat lay photos.

I used a little bit of drywall mud do add texture to the canvas. You can buy a small tub at Lowe’s. You don’t have to buy it in bulk; it’s near the painting supplies. You just get a small trowel to scoop it onto the canvas and spread it like icing all over the front and edges of the canvas, leaving some areas thicker than others. Remember, you WANT irregular texture.

I chose to use neutral colors for this piece, and felt like a bold, black pattern would be perfect. I kept it a large-scale design, instead of doing something smaller, so it was a major focal point for the wall and entire room. I used black acrylic paint and a flat paintbrush to do everything. I did a couple of irregular loops, going off the page on both sides in a thick, bold line.

I used a fairly dry brush to create some lighter strokes mirroring the same bold loops, also going off the page. Then, I added more round loops going the opposite direction off the corners. I put some large dot patterns in several areas, layering them over the loops. I used the end of the paintbrush to add smaller dots in areas.