Salam Sally; first of all, welcome to Italki for exchanging languages. I think Bruce was explaining to you the way of using the website. You contact people who are interested to your language or your accent, and you make a plan of meeting. Also, you can practicing your writing and native speaker will correct and give you some advises. If you have to be asked, you go to community, then you choose question. In there, you put your question.
The second part, if you are looking for native speakers for English practicing, I advice you before you write your article, post it as an English post, to be available for every English speaker. Like your question should be in an English category, not in an Arabic one.
أعانك الله
السلام عليكم