Since there are so many high-quality maid costumes for sale, and even some specifically for Rem and Ram cosplay costumes, it is really easy to do! It is one of the few costumes that a total beginner can do without any problems. All you need is the maid costume and a blue wig, and almost everyone is going to know right away who you are cosplaying as. You can also make one piece of the costume yourself if you want to try this. I would recommend even beginners to try and make the maid headwear. If it is your first time, use cotton and not silk, cotton is a lot easier to work with and cheaper. If you are an absolute cosplaying expert and make a lot of costumes yourself, you can give yourself a (major) challenge by making the maid costume yourself. This is a lot harder than you would think it is at first glance. So make sure you have 1. Experience and 2. A lot of time before attempting this.