I really like your lighting ; n ;
Aww, I can show you how I do it
i've noticed quantums art is usually kind of sharp or boxxy, stiff kinda.
When I was younger the only thing I'd ever draw was cities from the air, so that led me to learn to make straight lines but not very good with curves.
what software do you recommend for a beginner with a tablet?
Photoshop CS6 is the one-and-only popular Adobe software, it's very versatile in its function.
Paint Tool SAI is also very popular as it is built and designed specifically for painting.
FireAlpaca is a free alternative which mostly attempts to mimic the characteristics of SAI.
There's no one software good for anything. You're gonna have to pick one and see how you do.