2:- Have eye on details !
3. Get to know your customers
4. Work first line support for a while
5. Never stop learning
and recognize that you will never know everything
6. Learn when to automate and when not to.
7. Question the way you work every day
8. Improve communication skills
Practice Testing !!!
Learning about the technologies used to build the product , this helps a lot .
Report detailed defect reports.
The report should have all details pertaining to the environment , steps to re-create the issue , and all logs & traces .