Any offering or puja To Maa Matangi requires your highest reverence and sincerity. If you are sunishchit {sure} about your pure intention, then proceed. Otherwise, refrain from any tantric worship practices without clear guidance from a siddha-guru.
The Dimension you will be touching Is Very Alive. Therefore, beware!
With sincerity and purity of mind, you may Chant This Mantra, Recommended before evening during the day: