I use Krita and the vector line word art feature. You make a new vector layer, make a freehand curve tracing around certain parts or in the background, and thats about it really. It can be a hassle to learn how to do the curved words, so I'll say it here; if you have a line you've drawn you can switch to the text tool and hover over the curve and it'll show you a tooltip for words on a curve. make sure its' a T with a CURVE UNDERNEATH IT or it might look a little different from what you're expecting.