Design Identity for beauty youtube channel and social media

We are structuring a Youtube Channel visual identity and the same for an Instagram account, in which we are beauty professionals talking about beauty with science, explaining about skincare and beauty in general, but linking it with skin physiology. We want this visual identity to be cute, but at the same time clean and fun, but it also should provide the feeling of reliable content. We want to share content in a fun and nice way, that people can get the information without reading a boring huge post. I have an example of what I believe is a good visual identity (please find attached), but off course this idea not necessarily represents all of the messages implicit in our type of content, although this influencer of the example is someone who has a fairly good knowledge about skin and physiology. The design identity could be inspired in the example below, but please mind that we don't want a copy. We want to build our own visual identity. We haven't already decided which colors will be our colors, so please feel free to experiment, but we are thinking into blue, lavender and pink. However we could also vary the colors depending of the post. We would like to have design layouts ready so all we have to do is organizing our info and not having to work hard for it to be pleasant and cute for the followers. The types of posts we are working on are: sequence of pictures explaining about some skin concern such as acne, hyperpigmentation, skin hydration, aging, skincare products, cosmetics, haircare products and so on, with a "cover" and content design layouts after (like in the example), besides a specific design for posting wellness quotes and icons for making easy for us to explain about beauty issues and how to take care of them. I think that's all! Excited to work with you and let's find out the best design identity to share our knowledge about the beauty universe. :) Thank you!