apple, i am not sure about the flowers.
you can just go to the temple, ask the counter staff how to go about praying to Zhu Sheng Niang Niang.
They will teach you the correct process.
They will usually tell you to buy two packages.
Not expensive, i think total only $5 if I remember correctly.
first package is to pray to all deities first before praying to Zhu Sheng Niang Niang.
Second Package is to pray to Zhu Sheng Niang Niang.
You can engage the Auntie there to help you say Prayers to Zhu Sheng Niang Niang if you don't know what to say.
Otherwise, you can just pray to Zhu Sheng Niang Niang on your own and tell her your name, your hb's name, age, purpose, and your wish.
Oh ya, if you wish to return eggs after your baby full month, you may also indicate this in your prayers... like some other mummies did.
AFter praying, you can take 2 eggs that other mothers returned. 1 for you to eat, 1 for your hubby to eat. (if there are any eggs on the day you go)
Then you will go out to the pagoda to burn joss papers (which is included in the two packages that you bought)
Hope it helps.
All the best to all TTC-ing mummies !!!!