Something Im working on atm, its nearly a couple hours work or so, but I need people to tell me if they can spot anything wrong with it before I start working into it proper and rendering, so I would find any paint overs or red lines very useful thanks
It really depends. If you wanna digital ink it, it's enough shading. Besides. If you go traditional then yes, you need harder shading to represent better, however, if you like to sketch on paper transfer to digital and ink and color in PS, then it makes no sense since you'd be overriding the shading with color anyway. In digital you need those hatches just to remind you how the shadows look, not necessarily to give a feel of 3dness to your character. You can do that afterwards through the painting process.
You've got some nice sketches comming along, what I'd recommend the most to improve is everytime you finish a drawing/painting, find some professional work that is similar to what you wanted and try to figure out what you have to do differently to make yours look like theirs. The answer won't always be clear but if you continue to do some traditional studies from life and anatomy the answer will more often than not come with practice. Keep at it
Got some paint yesturday and did this acrylic lion from reference, done in around 2 hours, thought I may aswell upload it, Im not sure how good it is in terms of traditional painting though. Maybe could spend more time on it.