Request for suggestion/advice/help on what to do next starting from manual sketch-PhS

So I had a hobby before of doing some sketches with pencils and have a bit of "finished" sketches (examples below), and recently I've been trying to get into digital art using photoshop. First thoughts were to use my sketches and start digital art using them as a reference. However, due to my lack of imagination and current knowledge of photoshop (I tried doing vector sketches over it, but that turned out too bland unrealistic and too... vector), so I don't really know or even have an idea in my mind of what can I do with them next. The problem is I'm not even sure of what exactly I'm asking for..