One of the great advantages to sharing your beginner work is that you are able to see rapid progress. The initial learning curve is usually pretty quick. Making a Vimeo and YouTube channel and posting to reddit provide quick feedback. A lot of the feedback will be critical of what you are doing, but this is all part of learning.
Once you reach a certain level of achievement you reach a plateau and growth levels off. This is usually a key area of attrition. The funnel tightens and many people are happy to stop getting better. It is important to identify what the next achievement will look like and keep moving towards it. For me, it was being included in an actual video production.
If you are interested, get in touch with Brent at In Focus Video