can not explain from picuure. It has been 5 days since the post .... has the shape of the seedlings improved ?....
did you check for a insect problem (aphids )?

Hmm, there are no insects. I thinned the seedlings today so they look a little wimpy. And also I tried to "untangle" the leaves". I guess I will just see how it turns out :)

Thanks for the reply though.