You're welcome. One prevalent thing I see with todays artists is to obsess over the imperfections of their piece. Since they were the ones that drew it from start to finish, they tend to dwell on the things they did wrong, rather than congratulating themselves on the things they did right. This only enables self-discouragement. Instead of dwelling on negatives, it's better to see those negatives as potential positives, the knowledge of which can be applied toward your next piece. My vehicle sketches weren't always hyper realistic, for example. I started out drawing boxes for cars and over time I pushed myself to get better and better.
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