Nice work, Catlronstone - a lot of time and effort went into this, and it shows.
I’m going to offer some opinions, and I want to stress that the information is offered in the spirit of helping you perhaps see some areas differently:
First thing is that the circle of light at the bottom of the image keeps pulling my eye down there - it seems really bright, yet doesn’t seem to be putting out much light proportionate to how bright it is. Did you use an Irradiance Volume to help with this? (I didn’t see one in your scene setup). EEVEE can “use” emission only if you add an irradiance volume (or fake it with lights). At any rate, I don’t think this “portal”(?) is the focal point of your image, so you might want to tone it down (perhaps tone down the center and leave the edges bright?)
Her face should be more in shadow given the light sources in the scene and the proximity of her hair to her face. As she’s lit now, her face looks kind of “flat” and it takes away from the overall image. Make sure that your lights have the “contact shadows” checkbox ticked, and play with the light’s shadow settings. In EEVEE’s settings, set your Shadow Cube Size and Cascade Size to 2048 or 4096 for cleaner shadows. You might also play with your Ambient Occlusion settings - try increasing the Distance and the Factor - and this might take care of it
You might consider re-posing her left hand - it looks a little stiff in it’s current pose.
Are you using any Subsurface Scattering? I would suggest it if you aren’t - or if you are, then increase it’s influence. Use it on the cloth, hair, and her skin. EEVEE actually does a really nice job with SSS considering it’s real-time. Also, with the cloth and the hair, I would expect more light to penetrate, so make sure that if you have SSS enabled in the material, that you check “Subsurface Translucency” in the material settings.
Lighting: There are a million ways to light an image and it helps to have a mood in mind or an idea of the “why” you’re lighting the way you are. Remember that sometimes, less is more. It can be very tempting to light the crap out of a model that you’ve spent a lot of time on because you want to show it all off, but if you’re not careful, it can end up looking like your model is in a football stadium. It’s a good idea to start with one light source - usually your natural and most obvious source - and move up from there. Sometimes you don’t have to light the model directly - but you can light something behind it - like a wall - to pull out the silhouette. As the image is now, it’s what I would consider a bit “overlit”. You’ve lost your core shadow - which may be exactly what you intended - but it can make your image look kind of … unfocused.
Again, these are just my opinions, and you can feel free to disagree - that’s how art works I know how much work goes into something like this and no matter what criticisms I offer, it’s still a nice piece as it is.