Be very likable, humble, safe humor.
When explaining your demo reel, don't bore them long explanations. But if they see a big marvel shot they may assume that your supervisor did most of the work and you only did a small roto or something.
They like seeing personal projects and a good website to show your passion in this industry as though you would do it even if you're not getting paid.
Don't flat out lie, if you're caught it will completely fuck the relationship. BUT also be skillful about hiding certain details that might turn them off. Don't let silence pressure you to blab about anything and everything about yourself. A wise man once said: nothing.
They don't want to hire people who got fired from other companies or only worked for then for a short period of time. Be ware of giving them intel that might make them think that.
Knowing that you have so many experts in this community to help you for all different kinds of software, try to know what software they use and do not say that you are a rookie. However it can help to say that you are not good with a software that they don't use much to show that you're not saying you're good at everything. So they trust that you say you're good at.
However, be prepared for technical questions or tests on software, tools, and methodologies relevant to your role. A good copout for not answering a specific technical software question is to say that your original bread and butter is with a similar software so you deeply understand the process but may need to refresh on the name of certain features in that software.
Prepare thoughtful questions about the studio's work, the team, the role, and future projects. This shows you're engaged and serious about the position.
Remember they want someone who replies fast to messages and can read the clients mind and have a good creative taste so there aren't endless revisions.
Sometimes good to mention cutting edge tools, AI, etc that you're experimenting with.
Keep sending emails & or spec work after the interview, in skillful way that doesn't annoy them.
Show willingness to improve and adapt and be coached.