Realistic Portrait Drawing From Start to Finish

I began drawing and painting as a hobby from a very early age. It was a fun way to pass the time rather than something I took seriously. In about 2011 my affinity and ability to draw faces was discovered. I like the control and precision of it. Though I love portraiture, it has sort of pigeonholed me into that category of art. I am working on letting my creativity bloom a little more and find ways to include creativity and personality into my work. I am also slowly but surely working toward more precise, detailed drawings. As is, I feel like my skill level compared to where I'd like to be are spheres that don't yet touch! I'm definitely self-critical! By dint of much elbow grease I plan on stepping up my craftsmanship with each drawing I do.