Just cause I feel the need to show off at the moment (I'm doing awful in maths so I need to remind myself that at least I can draw Pretty Well), here's a study that I did a month or two ago. It's actually a series of four drawings/paintings (what do you call them when they're digital??), and I used reference pictures for all of them. This one took maybe... two hours?? Some things are a bit wonky but the main point was to practice hands and light, which I definitely did
Well done on the light and the metal part of that bulb!
If you wonder, it's called a digital painting.
The difference between drawing and painting is the thought process and visual language behind it: you create an image differently if you use lines to tell it than if you use gradients and flats (picture a three inches wide paintbrush versus a pencil... Can't use them in the same manner). Turns out the digital has tools that require both approaches. So the results are still drawings and paintings (and, you know, everything else possible).
Piney: I meant the corneal part of the eyes, not the entire eye shape. But no worry, I enjoy your character the way it is and my observations are purely informative and you have zero obligation to follow my advice. You do what you feel is right.
