I don't know, you have a great style and technique, but I think you should start an head with an already clear idea of what you are going for. I can kind of relate to the laziness problem, but over time I found out that to solve it, at least for me: you need a drawing that you are passionate about, a drawing that you find interesting and you have motivation in completing. That means planning before committing to it.
In this head honestly I see a generic horror head that, while being nicely executed so far, doesn't depict a subject particularly interesting or that could stand out. Your most amazing heads had very good concepts at the base too other than great technique, like the technology head you won the HTOTM with.