Ketchup bottle in a window

Done on an iPad using the Procreate app. I have been trying to do a digital painting that resembles a water colour for a while without too much success. This is my latest attempt. I created a brush and used it for the paint, smudge and eraser tools at varying widths and opacities. I didn’t do any post-painting adjustments to achieve the look. I really wanted to maintain the feel of painting while I was creating it.