Before getting efficient, first prioritise effectiveness. Efficiency allows you to do something quickly and well, but effectiveness determines what you choose to do in the first place and how well you do it.
It’s no use being hyper-efficient at a task that has little to no effectiveness when it comes to achieving your goals. Decide on what is effective first.
And carrying out a dry/quick-&-dirty/rehearsal version of the task, be it a draft, a sketch or a prototype, will help immeasurably with the quality and effectiveness of your final output. No one gets it 100% right the first time.