Transliteration for petitions

Hello all and blessed be.

I apologise for my bad english. It is not my native language but i hope i can explain thing clear enought.

I am new to magick and witchcraft and i realy like the idea working with angels.

I try this system for past 3 months doing moon tablets and invoking shekinah every week.

The problem i face is the language.

Like i said english is not my native language and it is hard for me to write the petitions. Also it does not feel right. On the other hand i have no way to write in cyrilic and then encode to Theban Script

because i am unable to find letter correspondences(same for Passing the River Script).

Can i use transliteration from cyrilic to english and the encode into Theban or Rivers?

Thank you.