hey, i respect your courage to start over! im pretty sure you'll end up with better results. However, with these set of thumbnails, i feel like 'exploration' is lacking, it seems like you stuck with one silhouette option and went with it.
Unless you've already had different options that you didn't post, I feel like you can benefit from exploring more silhouette shapes.
disregard all line works and details, and simply explore what kinds of shapes you can come up with for your new character, only by using pure black silhouettes. I feel like you can come up with more interesting shapes by that way