This android app was mentioned in
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It has layers like Photoshop if you create a Drawing [link]
You can add your image to the drawing.
Found this app too [link]
On Android, I've been using Medibang to draw. Though it requires an account, you can work offline once you've signed in, and there are quite a few brushes you can use to draw whatever you need.
Does well enough on my phone, even.
Gotcha. I've been using a mix of some apps but I seem to use Medibang Paint the most. I like it though I wish it had layer rotation the way SketchBook does.