What are some techniques you use to reduce wasted time? Wasted fabric?

Note the word 'waste'. This question is focused on efficiency. You'll want to give concrete steps that you've taken to do work faster while maintaining a certain acceptable standard of quality. Avoid talking about shortcuts that involve the reduction of quality. Though they may be used in the industry, and may even be acceptable, it's better to use this opportunity to promote your work ethic and/or creativity.