Make my blood run cold

Make my blood run cold
I shivered, it wasn't a nice feeling being watched but that was because nobody ever noticed me. It was like I was invisible. But I liked not being noticed. However my appearance didn't help, I had long brown hair with natural highlights and silver/grey eyes. I was around 6 foot so I often towered over people, that got me noticed more so I often dressed in dull colours to blend in. However I felt eyes on me. I could feel their icy stair on the back of my head and even thou it was 35 degrees C right now, it still made my blood run cold.