first i must mention im not that good until recently it was nearly a decade since i stopped drawing . i just started up again so i could refresh my skills and be able to teach my son as he grows up.
i took lots of classes but honestly other then learning basic concepts like 2 point perspective, and use of negative space the classes didnt teach me much . find something that you are intrested in and practice drawing that and inbetween the drawings of those things do random drawings of things you have less intrest in such as landscapes or still life.
its funny dim that you enjoy shading im a inking fanatic lol its my fave type of drawing i can ink for hours and it makes me feel calm and joyful.
here is some examples of my stuff.
thats before the inking its a rough outline sketch
this is after inking
this is a sunset in mixed medium of ink, pencil shading and charcoal
as you can see i tend to enjoy drawing darker inspired things and i dont use color much due to heavy color blindness. but im trying to teach my self to remember the colors by shade so i can overcome thatt hurdle.