Audiograms are a way of turning audio into video.
Your audio is displayed visually using what is called a "Waveform" or "Equaliser". To put it simply, your audio is played with a visual representation of the artwork to accompany it.
They are incredibly powerful social media tools.
Audiograms grab the attention of your audience in a way that text or audio alone won't do.
You can use 3rd party websites to create them.
Fear not, you don't need any advanced video / audio production skills to create these. Instead there are websites and tools specifically designed to create them for you.
How Can I Improve?
Check out some examples of audiograms to familiarise yourself with the concept. Some great examples can be found here.
Look at some of the websites designed to help you create audiograms. The service that I personally recommend is Wavve.
Use your audiograms to promote your podcast on social media. Instagram and Facebook in particular respond very well to audiograms.
Videos are the best way to promote your podcast;
Audiograms create great engagement on social media;
Use third party tools to create them - don't do it yourself!