Any offering or puja To Maa Matangi requires your highest reverence and sincerity.
Only proceed if you are sunishchit {completely certain} about your pure intention and clear direction.
Otherwise, refrain from any tantric worship practices without proper guidance from a siddha-guru.
The Dimension you will be touching Is Very Alive. Therefore, approach with utmost care and respect.
If you need guidance, contact The Temple here.