Hi there Whimsical Cloud!
I'm fairly new to role-playing tbh, so I'll understand if you don't want to roleplay with me because of that, but I still would like to try. :)
1. I love the first plot you suggested, Mermaid Days. I personally love the topic, and your idea sounds really good.
2. I'm... not sure what that means? Maybe it's because I'm still not used to the roleplay language, or maybe because I am not a native English speaker, but if you could please explain it to me, I would be very grateful.
3. If possible, I would prefer to play a female character (in this specific plot the mermaid). And when it comes to your role, I think it's fair that you chose which one you would prefer.
4. Good to go! I've got no problem with those. And I'm 20, in case you were worried about that.
5. Besides the one about what PMs and threads mean in terms of location, I don't have any other questions for now.
I'll be waiting for your reply! :)