Am I doing somehting wrong?

So I really really REAAAAAAALLY want to know if I am doing something wrong with my concepts.

Basically this is what I mean. I posted my concept: Nat, Death's Bounty Hunter, originally about 8 days ago. And after those 8 days, the only comments on it were mine (basically me saying what I have updated or the occasional bump). So I decided to take down the original post and repost it, to see if a repost may get people interested. To my surprise though, within the next 18 hours...... nothing, nada, not a clue, dust bowl, rolling in the wind. There is nothing on it, then there is two downvotes. I am just baffled to the fact that then there are concepts that have been up for maybe 2 minutes, and they have like 5 comments (none made by the original poster). yet my post that has been up for 18 hours has not received a single comment or even a noticedable thing besides the down votes.

So I have three questions:

1: Am I doing something wrong? Because seriously I love every concept that I do, but did I do something wrong with this one?

2: Is something not appealing about my concept?

3: Why do people that posted 2 minutes ago have more likes/comments then mine?

EDIT: I have realized through my own error and lack of foresight, that the idea of Death's Bounty Hunter is something I should at least leave my book to and not let it come to the league universe. Mostly because I have a hard time finding a way to keep him interesting without straying too far from the path intended.

Now this is not to say I will never revisit him, but to say that the concept is deleted and will be off of the boards for a long time.

sigh onto the anti mage concept.