I'm certainly no expert, but it looks pretty good to me. Here's mine to compare . . .
I also examined a fake decal I have, and your decal has much better detail. Then again, my eyes are not what they used to be, either!
Eeek. That one is hard to tell. The edges make it look like a sticker. I'm not totally sold on it buy let's see what others have to say.
What's the shell maker/size stamp and lot number?
Looking for WWII U.S. dog tags
It is an ET (or EF, difficult to read) 64. Lot 776
Looks like a good one