Whoa, that was weird! I went to change my comment (I had written "let the quality of your creations speak for themselves" and I wanted it to say "let the quality of your creations speak for itself"), and I guess you wrote your comment just before. My first comment is supposed to be at the bottom of the page. So yeah, a story for a vignette series is very important. I just wanted to tell you that I think all of those long, confusing backstories that I see on a lot of people's homepages are not necessary.
Okay, this is very good and everything. I just want to say something about the note on your homepage: your MOCs don't really need a storyline. Trust me, no one reads those. Just let the quality of your creations speak for itself. However, this is only my opinion. Feel free to ignore it.