Focus more on what can be done, and what can be improved upon; rather than on what you don't know.
02.
Don't be ashamed of your failures; don't hide them. Use them as an opportunity to showcase how you have recovered from them; and what all you have learned from that experience.
03.
In an interview, don't search for perfect answers, don't create stories; just share the reality. Be honest with yourself, understand your limitations, and keep your ego aside.