Hey, congrats!! keep it up - curation can be a bit of a mystery, but I've found that if you write quality content, stories that are at least 3 min reads, and stories likely to appeal to readers in a niche, you stand a decent change of curation. I have a fair share of curated stories, and the ones with solid research, clear citations, and fluid writing seem to do the best - oh, and at least 3 min reads - Medium seems to like stories that are not too short.