I’d say the main qualities you should highlight are problems you’ve noticed and solved outside of just your classes when designing or building software. Open source code helps if you’ve worked on any. Help give the interviewers as much insigt as possible to the way you’ve solved or thought about problems. If you don’t have a lot of code, spend some time reading and thinking about software design problems and how you’d solve them. Also, practice practice practice interview questions. I recommend the book Cracking the Coding Interview.