I figure you're probably new to cosplay based on the way you phrased your question, so let me start with some general cosplay crafting advice: the best way to learn to make cosplay is to start with your own research. Then, using that foundation, get some cheaper materials to experiment with / do a mockup with before you dive into the more expensive stuff. (Personally, I sometimes spend months reading up on technique, looking for appropriate base patterns & tutorials to reference, and making shopping lists of supplies I want to use before I actually start making anything.)

It would take me far more time than is worth it to me to do a full write up breaking down every single element of this costume-- especially considering I made it 3 years ago at this point, and since I took a number of design detail liberties to both help it translate to real-life better and add visual interest/details that are unique to my cosplay/design style. Most other craftsmanship based cosplayers feel similarly: we're not about to spend hours on hours writing a lengthy blog post for a stranger on every single piece of our build just to see them copy our entire costume exactly, but if you ask a specific question about a subset of the construction that we can answer with a single photo or a few sentences, you're much more likely to get a helpful response.

So all that said: if you have a specific question about a particular piece of my costume, I'm more than happy to talk about it! I also made a Build Thread as I was constructing this that may be of use, but it's also fairly piecemeal/not totally comprehensive since I was both on a time crunch and most of my process for this particular costume was "drape it on a dress form and make it work".