To establish a favorable reputation, show yourself to be reliable, dependable and hard working. This doesn't mean being an apple polisher, but it does mean focusing on the tasks that you were hired to perform. Avoid the mistakes that some new employees make. Some college graduates mistakenly believe that superior academic standing translates into automatic favor on the job. In actuality, earning an impressive GPA doesn't necessarily put you in a special category as an entry-level employee.
All new hires are basically on equal standing.
What you have achieved in the past is only a prologue to how you can perform in the future. Another work-related booby trap is being lured into company cliques. On campus, being socially popular and aligning yourself with the right group may be a necessary means for survival. In the real workforce, it can be disadvantageous to join any certain group right away. Set goals that benefit the company as well as yourself.