If you have mediocre writing, your art needs to be exceptionally good IMO (Like an art style like Lalin's curse, I think the writing in that comic is good though) ... But it's all on a case by case basis.
Since I think your comic is kind of hovering around the ballpark of featured quality, I'm going to be kind of extra-critical to try to help you get closer to that standard. I could see your work featured with some improvement.
First off, I usually really dislike the intros that are like from an omniscient perspective that is like "God made people with knives, swords, daggers, and wands and since the beginning of time they have been fighting....." but I think in your comic, it's alright since it's a story being told to another character and the story is being told in a rather humorous way (so we can deduce he is putting his own spin on it)
Though I think the art is generally solid, you are using actual wide shots and showing us where characters are placed in the frame which is EXCELLENT, but there are anatomy issues which will become a problem if you are aiming for feature. For example, in this picture his neck is distracting and his hands aren't holding the letter.
Panels like these also shouldn't be in your comic- The editors DO notice. One of the first things they pointed out to me was the weird shots I had some some lazy art I used to save time and asked me to not do it anymore lol. Take the time to draw out the character, even if it is for a humorous scene.
In general, the art is good, but it is slightly below what would be expected from featured. However you're just slightly below it, and with a month or two of life drawing and maybe taking a face drawing class you will be able to manage their standard! The colors are also kind of plain so I recommend studying color theory as well.
In terms of writing, I actually don't find the premise of soulmates overdone at all. But I do think the way you are executing it is kind of standard and not really pushing too many boundaries. The three-episode rule is employed by webtoons. It means that they try to get readers interested within three episodes, and you should be following it as well. Unfortunately I was not interested enough at episode three. However, I WAS interested at episode 1. How can we fix this?
Well, the slight twist in the first episodes where her soulmate was the prince is something I've seen a lot and so that kind of made me not looking forward to the rest. I of course did read it all for the sake of this review, and the turn of him being like a crazy pyromaniac kind of dude was a little bit of a spin. But at the end I basically am guessing that she was going to get with the guy with the red eyes. (I think this is kind of similar to the plot of subzero too which may be a problem)
Now, this isn't bad at all, but it could be set up stronger.
If I had to rewrite the events in a more compelling way, this is what I would do. This is just me, my opinion, as an example of how to make the events compelling.
Episode 1: Can stay the same.
Episode 2: The episode starts with the prince standing with his foot on some peasant's head (or something like this.) The peasant is begging for his life, saying that he meant no disrespect. The prince pushes his foot down more, saying that if he didn't want to disrespect him he would have stocked his favorite bread as usual. The peasant starts to beg and reply, and the prince snaps and the peasant's body engulfs into flames.
[[We need to set up the prince as a bad guy ASAP, to get the reader engaged in him]]
Then, we find Fariah at the party. She goes to the fortune teller guy, and he tells her that her soulmate is the prince. Her heart drops, and her friend looks shocked. They both beg for him to be lying, and the fortune teller says that the word of fate never lies.
Episode 3: They go outside, Fariah wobbles over to a tree and drops to her knees, shaking. The party is going on wildly in the background. She hopes and prays that the fortune teller was wrong. Her friend pauses, leans down and pats her and tells her that it's going to be okay, he was probably just a third rate fortune teller. As her sentence ends, an arrow goes straight through her friends skull and she drops to the ground. Fariah looks shocked, as arrows begin to rain over the party, and people start to drop over dead. Flames start to trail over the ground, engulfing the tents. She starts to run, and is cornered by the flames. She hears footsteps behind her, and she sees the prince walking towards her with her friend's body in his hand. As he gets closer, he pulls the arrow out of her skull, muttering that they're expensive and he'll have to clean it later. He then turns to Fariah, smiles, and said he's here to retrieve his soulmate.
... Now obviously this changes the characters a lot (and pretty much takes out all the humor you had) so I'm not really writing the suggestion as how you should restructure your story, but this is an example of a three-episode premise that would get readers interested. They would look at the prince and be like "Holy fuck, he is so evil, I want to see more of him!" and the cliffhanger at the end would leave the readers thinking "How is she going to deal with this!" as well as establishing immediately the theme you wanted to set up of soulmates being a flawed belief.
I think even with ideas that may seem "overdone", you can execute elements so well that even a plain story can be amazing. The Last of Us is a simple zombie story with a focus around a father-adopted daughter relationship and it is a beautiful fantastic piece of writing. Even with the premise you have you can definitely make it interesting for the reader.