Painting your own accent pillow is really easy! All you need is a white pillow insert and some paint! You can find all shapes and sizes of pillow inserts at craft stores like Hobby Lobby. For my grey accent pillow, I used a tube of grey acrylic paint that I already had on hand. I painted some geometric shapes on the pillow and let it dry. Once it was dry, I threw it in the washer and dryer. I like to wash and dry my painted fabric because it softens up the fabric and the intensity of the paint.
I chose to paint a grey pillow since the walls in this room are grey! Chose as many different colors of paint as you like but try to choose colors that are already in the other decor in your room so that the design feels cohesive.