I love how casually you’re just like “yeah imma draw on it”. That’s the kind of resourcefulness I both admire and also try and shamefully hide when I do it myself.
Another possibility might be that, assuming you stitched with two threads, maybe adding a third thread on the top leg of the less cover-y stitches might be enough to blend them in? Just a thought. I’m sure colouring it in with pen will also work 😂