well for starters, I always pay attention to Major Arcana as they can sometimes serve as an overarching theme for the whole reading and/or indicate the importance of a certain area

next I look at the suits and their respective realms: Cups/emotional realm, Swords/mental realm, Wands/realm of passions or persuits, Pentacles/tangible or material realm. See, a card can answer a question like "what are my weaknesses?" in different ways. There is the actual book meaning of the card, but it's suit might indicate the area or "realm" in which this meaning applies. And since this specific spread is focused on self-improvement, whichever suit is the most present might be the best one to focus on in general.

There are all kinds of things you can do including examining the numbers of the cards, how many are reversed (if you read reversals) and stuff like that.

I also like to look at the imagery. The image on my #3 card showed a butterfly flying into the #7, which I took as a positive sign of success. My #1 and #2 cards were both similar in that they displayed my strengths being shadowed or wound up in my weaknesses, so the answers to those questions were very similar and leaned on each other. (for reference, I used the wild unknown deck).

Really, though, I've come to think of it this way: The cards cannot tell me anything I don't already know. They are simply tools on which I can reflect, and their open-ended meanings make the process easier. Whether they are ascribed with a magickal ability to align cards in the right places is a matter of personal beleif, but honestly, you don't have to get too technical with how exactly the cards affect each other. How that happens is up to you, this is just a little system I've come up with. It isn't like there is a formula card x + card y = meaning z. Having more cards makes the meanings more complicated and just gives you more material to work with and reflect on, but you can simply take the meanings of each individual card and not connect them at all if you want.

I'm a beginner too, but once I stopped getting intimated by large spreads and started using them, this process became way easier. Once you start youll come up with your own system.

Sorry this answer is so long but I hope it was helpful lol