Understanding Sindoor and Teej Traditions in Mithila Culture

I am a Kayastha, and I plan to marry into a Mithila Brahmin family. I have a couple of cultural questions: 1. Is it acceptable in Mithila culture to apply sindoor in a straight line from the nose to the forehead parting? 2. I have heard that Teej is not traditionally observed in Mithila. However, I would like to celebrate it. Is it okay to do so, and how might it be perceived within Mithila traditions? I want to ensure I respect the cultural practices while also embracing traditions that are meaningful to me. Looking forward to your insights!