Niiohontesha
Bestest Strawby
I'm putting these two together because what I say may help you two, you can be spontaneous but also have a bit of planning.
Some of the text above may have already given you some ideas, but I like being spontaneous a lot too, but you can't be full on spontaneous, it's what I discovered, especially if you're in charge of a scene : P
Having a vague, just a little vague idea of where you want things to go is a fantastic guideline and helps you not derail things. You don't need to know exactly what you'll do to reach that goal (that takes all of the fun out of it) but at least have one. Don't defend it with claws and fangs either, if a new opportunity come up that gives you a better or more enjoyable idea then pounce on it!
I just cannot say the same for characters themselves, I prefer having these very well structured since the start of at least I go on filling out things as I think of them. My first character for this RP was one I tried thinking things about on the go (especially why her parents we're not with her) and my ways out ended up being the most comic-like improbable one.
Still acceptable, but with a really, really thin probability to happen. I didn't like it, but I'm not one for retcons either ^^'
So yeah, that's my advice, don't do that XD
Thank you so much for your kind words of encouragement and insight. I really appreciate what you decided to take the time to do and will do my best to work on my writing skills!
*salutes*