Title says it all. Oh, one more thing: would they be written top-to-bottom? Thanks!
I can’t answer the first question, but for the second: Either way is fine. Top to bottom or left to right. The former would be more traditional.
Google translate says:
Not being learned myself in this fine language, I leave it to the Chinese-readers among us to clarify whether these translations are actually appropriate.
I think that comes across overly formal, like “Please peruse this momentarily”.
“等一下讀這個” would be more like “Read this in a bit”. There may be dialectal differences in the grammar though – which version of Chinese does your target audience speak or where is s/he from?
And don’t write it top-to-bottom unless you’re going for dramatic effect. Nobody does that anymore in casual settings.
Though top-to-bottom is still used lot in Japanese, e.g., for dialogue in manga.