To worship your Kuman Thong made by Luang Phor Chang.
Use only the top layer of rice from your rice cooker with red soda and hard-boiled eggs. Offer this every Tuesday, accompanied by five incense sticks. Occasionally, invite him to eat with you at your table.

Before chanting the Katha of Luang Phor Chang, first recite the mantra of Namo Tassa continuously three times, in the beginning.

Namo Tassa Bhagavato Arahato Samma Sam Buddhassa x 3
Om, Maha Taewa Kumaro, Piya Kumaro,
Maha Phutoh, Mahit Tigo, Suppae Tisae,
Suwat Tigo, Suppat Kamaesu,

Kolakso, Suppat Chananang, Hatak Yeah, Maha Taycho,
Prawat Tigo, Rata Natya, Nupa Waena,

Rata Natya, Tay Chasa, Tae Wanang, Itti Pasaena,
Taewa Kumaroja, Loka Witoo, Ar-hung Nookah,
Ar-kan Chaya Ar-kan Chahi, Mahit Tigo.

After that, pray as you wish.
Remember to reward the Kuman Thong with extra food, drinks, and toys when he grants your wishes. Remember to transfer the merit to him when you make merit by giving food to monks or liberating captive animals. It will increase his power.