If you keep making masks, I highly recommend vinyl for the chevrons. It's very easy to cut and weather, plus you can use an exacto knife to scratch it up. (https://www.amazon.com/Oracal-651-12010-031-Red-Permanent-Vinyl-12/dp/B00NQNOFKE/ref=br_lf_m_5mc2hc7bfaqe7nk_ttl?_encoding=UTF8&s=arts-crafts)