I thought everyone is doing it like that, but its true, that copy paste sometimes move something, and it looks different, so you have to fix it.
Thing I dont know is, when people translate OP that looks like huge picture how they do it? Do they create the same picture and add translated text?
If it took so long for me to guess it, maybe some new users will find this tip useful. Translating ANN threads is a nice way to earn some coins.
They either ask OP for blank image or edit it by themselves, if background is simple.