Those multiple angled heads, keep doing those. 't's good habit.
Make sure to do your perspective basics also. Must, must. [I fulkin suck at the mo].
Make sure your monitor is as best calibrated.
Look up on values. [I'm on a shitty rig at the moment, but from what it looks like,
your values are too close together to show form. [I do it all the time n it kills me].
Sketsbook in your back pocket.
Keep an open mind into your finishing process.
Check out how others are doing theirs.
Reference, Studies ... the whole bang. As long as you have direction
your mind and heart will follow.
Don't be afraid to do traditional media.
The more tools you have in your pocket, the better, and easier you can convey your
moments of inspirations.
Of course these apply to me, so it may not apply to you, but ....
Keep them vision flowin, capish! [Keep updating your skill set, and this sb. If possible].