I think your profile page has the potential to be the start of a very successful Upwork experience. But it needs improvement.
Although you are focusing on Serbian language work, there is the potential to do design work for a broader clientele. So because you identify yourself as a proofreader in your profile title, I want to see your overview text free from obvious errors.
Right now your overview text has about ten obvious spelling, capitalization, language usage, grammar and other errors. Your page would be better if you fixed those errors.
I would also like to see more examples of your work in the portfolio. You should create examples of work, such as InDesign layout work, that demonstrate your advanced skills and show the kind of work you would like to do.