Sometimes I can spend hours on something and no matter what I do I can't get it to look right.
I was never satisfied with how any of these paintings came out. Maybe the problem is that in working with digital media the brushes can simulate the look of traditional media but it's not the same experience. That is to say I know how a brush feels in my hand and have greater control of the brush and the medium because I can, to a certain extent anticipate how the tools will behave on paper or canvas. But with digital media I am using a pen on a clear glass (or plastic) surface and no matter what comes out on the computer screen or tablet it's not going to feel the same. It's just a simulation.
But every media has it's challenges, something you have to get used to and it's one's ability to draw and paint that makes all the difference in the end result.