bound, future, and mistake for fiona? and wound skin and hide for lana?
Okay, so I'm gonna go with th EL'verse version of these guys for both of these questions bc it's the universe where I know the most about them.
bound: Has your OC ever been imprisoned or captured? What happened? How did they get out? Did the experience leave any scars?
Fiona has had god knows how many incidents of people trying to capture her, but she's fairly quick on her feet so not many people have really succeeded. Generally when she is captured she just waits for Tondra and/or Julius to come and get her.
She has scars around her wrists from when she was fourteen and someone tried to cut her hands off to stop her from opening a portal. (this incident is actually how she met rookie magic knight Ledior, but we know how that story ends)
future: What's the worst possible future for your OC? Are they taking steps to avoid that outcome? Are they even aware it's a possibility?
Fiona gets a glimpse of her worst possible future during the elf arc, (her friends dead and the kingdom ruined bc she was too reckless) and after this arc she does start stopping to properly look at the situation before jumping in.
(the worst timeline for her though, is probably canon; dead young leaving Finral in an abusive home)
mistake: What's the worst mistake your OC ever made? What led to them making it? Have they been able to fix it? How have they moved on?
Oh. Now. Fiona has made a lot of mistakes over her life. She is reckless to her very core, but her biggest? That's a tough question. At the point we're currently at in the manga, she'd call her biggest mistake trusting Julius, but we'll see how the current arc pans out before making any statements like that.
So I'd have to say her biggest mistake is jumping in to help Julius fight Patri immediately. And I know that it doesn't sound like a mistake, but the consequences of this action mean that she can't help Julius later on when Patri stabs him and has to watch Julius die so. She does start thinking before she moves after this.
wound: How does your OC handle being wounded? Are their wounds mostly physical? Mental? Emotional? What's the worst wound your OC has ever experienced?
Lana doesn't actually get hurt all that often; a side-effect of her main fighting method being burn the entire area to ash. But it does mean that when she does get hit, she isn't quite sure how to react. She generally freezes and just stares at the injury.
Beyond that, Lana is a Vaude and growing up in that house fucks you up. She's grown up with her father constantly cutting her down for not being a Spatial mage (when he decides to give her attention at all). The result of this- well, you've seen canon Langris. She is not emotionally stable. She is, however, better at accepting defeat.
skin: How comfortable is your OC in their skin? Do they grapple with anything that lives inside them—a beast, a curse, a failure, a monster? How do they face the smallest, weakest, most horrible version of themself? Are they able to acknowledge it at all?
Lana is not, in fact, comfortable in her own skin. Oh, she'll act like she is, but she's not good enough, she's not what her father wants, and no matter how hard she tries, she never will be. She's constantly trying to be something better, something other than what she is, something just cannot be because she isn't a Spatial mage, she's a Fire mage.
(somewhere, some part of her knows that there is a version of her who gave up, who let herself be beaten into the ground. She cannot accept that that girl could exist within her. Lana Vaude is Fire and she Burns, even if that means she burns herself down.)
hide: What does your OC hide? Why do they hide it?
She hides her insecurity, her fear that she will never be good enough for anyone, her jalousy that Finral got everything (a stable home, encouragement, a family that loves him) and she and Langris got left in that house with their father. She cannot be perceived as weak. She won't. She refuses.