Sketch every day
Drawing every day is particularly good advice for new designers, which is why it was stated regularly by faculty at my design college.
Sketching is the best way to communicate an idea you have because it can be done quickly and efficiently.
It's important to remember that "draw every day" doesn't mean creating masterpieces. It's about consistently engaging in visual thinking and the process of exploration which sketching offers. Even quick doodles can contribute to your development, so long as you think critically about what is being communicated and how.
