Hi Kaede.
I skimmed over your stories and i have to chime in what has been written in the previous posts:
To me personally it looks like you have interesting ideas on your mind. For example "Accept the date" and the premise of a hot woman, who cuckolds less than average white men, definitely sparked my interest. I found the cover picture of the story very appealing and fitting as well. But they way the texts are written and presented took away from my enjoyment and caused me to put aside the story and close the browser tab very quickly.
I believe that you either need to invest and put in the effort to bring your ideas to paper in an appealing form, or you automatically limit yourself to a subset of your potential audience. Just the basics like capitalization and punctuation would be a good start.
Don't be disheartened! Everybody has to start somewhere, and only practice makes perfect. And you don't have to be perfect. Nobody here is perfect. Many writer's aren't native English speakers, myself included. But if it is visible that you put in the effort, that should go a long way already.
And of course it is your choice to listen to this advice or not ;-)
Regarding the community and participation:
If other authors welcome your participation will certainly differ from case to case. Before you write something for the story of someone else, i would advice to contact them first. Write them a private message and check out if they are interested. Perhaps showcase them some of your previous work so that they can see your style of writing. Perhaps layout your ideas in a few short descriptions. That way you don't waste your time writing something without the knowledge of what the story owner will do with it, or if he is likely to publish your contributions at all.
Obviously if the owner hasn't logged in in ages, you can save yourself the trouble. Unless you really want to contribute to such a story anyway, in that case you can check out the following forum threads:
To get other writes to participate in your story, or to even just get comments and feedback, that's tricky. Simply be active and write interesting stories. The more you write, the more readers you get, the more likely it is to get feedback or even participation. Try to have interesting choices or cliffhangers, where others could easily branch off. Set an example yourself. Participate in the stories of other writers. Give helpful feedback and comments yourself and you might just get some back. Of course you might follow every single advice given to you on that subject and still not get the level of participation that you desire. Or any at all.
I hope this post was helpful.
Greetings, dingsdongs