My strengths are that I am usually highly organized, honest, thick-skinned, communicative, patient, and eager. My weaknesses are that I tend to be overbearing, brutally honest, and critical. That's not to say I'm intentionally mean, I just tend to ask a lot of questions to get clarification on stuff that happened in my partner's posts, or to get more information than they included in their posts. I like immersing myself in-character, so if something in your post makes it hard for me to imagine the scene, I'll probably end up telling you about what I think the problem is, what you might be able to do to resolve it, ways you might be able to improve in the future, and so on.
The focus of my description goes to "creating the scene" rather than "creating a feeling", so my posts are not especially elegant or poetic. Further, the only 'fluff' or 'filler' content I use in my posts are descriptions of irrelevant but potentially entertaining things that happen in the surroundings. I'm still working on my description skills, especially when it comes to depicting emotions. If you want to give me feedback, I'd appreciate it!
I tend to only include information that could reasonably be 'accessed' by other characters in the scene within my posts(like my character secretly pulling a dagger out of his sleeve). That said, if my partner wants 'inaccessible' information(like my character's thoughts or intentions) I'd be happy to include it in spoilers or in DMs. If you've ever played D&D or a similar TTRPG, you'll probably notice that I format my posts like a GM narration, since that's the format I've got the most practice using.