For some odd reason, many believe they can obtain degrees in other fields and then call themselves graphic designers. I have seen engineers, architects and other graduates from different fields do this. What do you know about typography? What's the difference between a geometric sans-serif and humanist san-serif? What typeface was used throughout Captain America Civil War? What makes the FedEx logo special?
What are the principles of design? Do you know the current design trends?
Even if you know these languages can you apply design principles to make elegant solutions? Can you recognize art/design history influences on different designs?
You should begin by taking courses on Lynda.com. You should create a Behance and/or a portfolio website with your work. Find your style and your specialty. Be honest with yourself and compare your work to others to see if it yours looks considerably worse. I once had a Professor unpin our work and re-pin it in order of best to worst and told us to figure out what he just did. Until you've gone through and understand the many things that forge a designer, you will likely have a hard time being recognized as one.
Check out courses in typography at lynda.com
Also begin checking out websites like: