@AshuraDX - I haven't applied gaussian blur effect. I was using one soft airbrush (changing its size ofcourse) and that's it. Found it was easier to work with as transition of colors became more realistic rather than with a sharp edged brush.
Digital is easier because one can apply effects on the image, plus the image can be quickly fixed and reshaped. Painting and drawing traditionally is harder. And with these new softwares and tables, the real art is not valued by new generations..