since I'm just a mere grade 12 student, I admit that I'm not an expert in Thai-to-English translation.
But I guarantee you, the English-to-Thai will be as great as adults' work or even more proficient.
I've got translation works from this website before. and I did it quick, responsible and responsive
Thai is tricky and that's why you need a native,
so that your work will surely be correct
but that doesn't mean every native is able to use Thai beautifully.