Look at the job description and the key competencies listed. Come up with examples for all of these. Then type/write them up in the STARR format (I always add a reflection bit in at the end). It helps organise your examples into an easy to follow structure where it’s easy for the interviewer to tick them off as met.
In the tell them about yourself section at the start, make sure you discuss anything relevant to why you’d be a good candidate so that information is all clearly outlined from the outset (so any relevant qualifications, past experiences and what your responsibilities were that are relevant to this role).
I think the important thing to remember with internal interviews is that they obviously “know” you so there’s temptation to leave information out because you’ve worked with them. You need to spell this out to them during the interview. It doesn’t matter if Barbara knows you know how to (as an example) provide excellent customer service. You still need to say you provide excellent service, a situation it occurred, the task, how you did it and the result, then maybe a bit about how you would do it better if necessary. Don’t feel embarrassed about selling yourself.
I’d also use the fact it’s an internal interview to your advantage. Really try to sell the fact you’ve been at the company x years, your dedication to the company, how you enjoy the culture, already have solid relations with company personnel, etc. Use this to your advantage as external candidates won’t have this.
I also find it useful at the end of the interview to obviously have some questions prepared. One I especially like is something to the effect of “is there anything in this interview that has made you question my ability to do the job”. It gives you an opportunity to give an example of an area you’ve maybe fell short on. And IMO if they say “no there’s nothing” then you can walk away knowing you did your best. I think some questions relating to the interviewers/business can be useful, though. There’s lots online.
However, there’s a YouTube channel called “CareerVidz” and he goes into so many interview situations with nuanced answers. I used his videos to inspire me for some of my prep. I’d watch a lot of these just to refresh how to answer questions without waffling and I found his answers actually reminded me of examples I could use when planning my competencies.
For the whole Zoom/Skype/Teams interview thing I’d really use it to your advantage. The day before take time to set up a good spot somewhere in your home. Good lighting and a place for you to set your notes/prompts (obviously hidden from the camera). Fire on the webcam feature to check what is in shot. Do a practice Skype call with a friend to check everything is working properly a few days before so if you need to buy anything you can.
I’d also have a glass of water available so you can drink and pause if a question throws you a bit. It gives you a couple of seconds to think of an answer without looking like you’re just stalling.
Pick out a smart interview outfit as usual (I just did top up but if you have to move around I’d obviously have dressed properly top to toe).
You can stick notes around/behind the screen or minimise Skype and have a word document on screen and then just subtly scroll if you need reminders. I’d always write out figures you want to use somewhere else that’s obvious for you so you can refer to them quickly and they’ll always be correct. I’ve found people during interviews tend to take notes (therefore aren’t staring at you on screen the whole time) so I think you can get away with reading information off notes without being too obvious but obviously prepare so you can do it without the notes.
Spend a couple of nights talking to yourself and through your answers. It feels silly but I find it helps you cut down the waffle.
I hope this helps! As I said, that CareerVidz guy is quite good just as a starting point. I was super anxious about doing a Zoom interview but I actually found it a lot nicer than in person interviews. I had my screen showing myself maximised and theirs quite small so I felt like I was just talking to myself rather than a couple of interviewers so that definitely helped a little. But do try and look at the webcam when they’re asking you questions so there’s a bit of eye contact there.
You’ve got this!