A perfect suit is impossible
There will always be someone who will like your costume and someone who will not like it. This is a matter of taste and point of view, an individual idea of the character. Try, however, to at least like your costume yourself.
Think about character recognition
Not all characters and not all costumes are easy to recognize. Let's say that many of the heroes walk in regular Japanese school uniforms. It is easy to reproduce, but it will be difficult for viewers to guess whose costume it is. On the other hand, you can make an intricate and unique costume for an anime character that few have seen. And the effect of such a costume will also be ruined.
Before planning your costume, decide what kind of impression you want to make
If you put on a fancy costume and appear in public, then you are obviously hoping to become the center of attention. It is important to imagine in advance what kind of attention. Let's say you hope that everyone will notice how exactly the color of the skirt is chosen, and everyone will only notice how short it is.
Cosplay is not only a costume, but also a person
As you know, many anime and manga characters are distinguished by "inhuman" proportions, which are quite rare in real life - and usually not for those who are involved in cosplay. Some features of the figure can be compensated for, some cannot. However, in practice, the most noticeable are not the "inaccuracies" of the costume, but the "inaccuracies" of the one who wears it. Get comfortable with your costume. Wear it naturally.
The suit is not only the top, but also the bottom
Do not forget that the costume must match the shoes (especially if the cosplay is held in a warm room, where the shoes are not dictated by the weather). At the very least, it should be at least as clean as the suit. However, if you do not have shoes that match the suit exactly, just try not to notice it. Usually simple and unobtrusive boots are enough to complement the tailored upper of the suit. People pay attention to their feet last.
Don't forget about the props
Many costumes include wands, swords and other useful props https://designedby3d.com/product-category/apex-legends/. Play them! A well-made fake sword can hide a lot of minor flaws in a suit, and you will make a much stronger impression on the audience. And be sure to make a neutral (in the sense - not like a scabbard) carrying case for it.
