This website is too scary. Cakewrecks just highlighted how important it is that non native english speaking folks take an ESL class. Please, I beg of you. If you are going to be writing on a cake that several people will see, you are only doing yourself and your employer a disservice if you don't check your spelling. I know you aren't getting paid a great sum of money to be the cake decorator at Costco but any job worth doing is worth doing well. At the same time, I would wonder what your application or resume looked like and question the person who hired you to do this job.
I can understand getting things like they're, there & their mixed up. Perhaps you're and your as well. But to misspell words like wedding, girl, congratulations....you would think there would be a quick reference guide these folks would have to refer to. It isn't as if these words have never been written on a cake before.
Have I mentioned that spelling is my pet peeve?