You made this in the automatic splice maker, didn't you?
You poor sod. Alright, let's get some basics out of the way:
1.) Don't use the splice maker if you're making anything serious
2.) Don't use the splice maker if you're making anything serious
3.) DO NOT use the splice maker for anything other than "general idea" for when you actually make the splice/sprite
Alright, let's move on to stuff you can probably fix if you're dead-set on using these portraits.
One reason I despise the splice maker is the defaults for the colors are just atrocious. I dunno if you actually want your characters to look like clay or not, but in general, just stick with the default 7/8 skin colors, depending on the shading you're going for. Also, outline. Never use pure black. It just looks bad.
FE8's outline ought to be good for anything really, but I've heard people give arguments for using 7's, though I don't remember them. Still, probably best to stick with 8's. This isn't a problem with your splice, but it's a common beginner mistake so I ought to mention it while I'm on the topic: never make anything darker than the outline color.
Quickly changing that brought me something that ought to look like this, which brings me to my next problem.
You ought to be more liberal with the use for the darker shades, especially where the hair touches the skin. You can see this from the Leila sprite, which is what I can only assume you referenced while making this. See how wherever the hair touches the skin, there's some anti-aliasing for the roots or to give shadows? Since this is a splice, and it's a pretty blatant one at that, I think it's fine you steal the shading for it, at least until you ~~hopefully~~ start making customs and have learnt why they do that, and can tell how it improves the sprite.
Anyways, next point. The clothing. I know Farina's clothing is naturally like that, but the only reason it even works is because it's naturally dark. You chose a very flashy, bright blue, so the outline clashes really hard with it. I'd either suggest to choose a darker color, or the more fun and educating option, trying to anti-alias it with your other colors so there's more detail, make it less black and white (or blue, in this case). Can't really think of any good references for it, but others I'm sure will go more into detail if you ask them. Just overall, learn how to anti-alias. It can only help.
Overall, I can't really say much since these are splices, and not custom made (which is something I abhor, but meh, people will do what they want when they're starting out). Just take what I've said and work with it, get advice from other people who are better than you. Just experiment and practice, you'll get better eventually.
Should mention, the same problems are with the other splice too, but I'm a bit lazy to go into specifics. Still though, overall, same problems. Work on it.
Edit: Spelling error
Edit 2: Here, I took a shot at it to see what I could quickly fix (ie. not anti-aliasing or those eyes). Dunno if you'll learn anything from it, but I hope it helps. Compare the two, see how some changes to shading can make your thing look better. Of course, I didn't spend too much time on this, so there's bound to be problems. Either way, good luck with your future spriting, man