Mastering the skill of running requires great skill, strength and sensory feedback.
Perfecting and practicing dynamic squats and jumps will help master the correct posture and rhythm and stand you in good stead for injury-free, natural movement.
As your skill develops and becomes a more ‘subconscious’ activity your technique should become increasingly relaxed.
If you've completed the previous stages properly, you shouldn't encounter any problems as you move to barefoot running. However, it is still a new way of moving so do take things slowly; if you're accustomed to running five miles in regular trainers, don't expect to be able to run the same distance straight away with bare feet or in VIVOBAREFOT shoes.