I just got done doing some detail on my cookies like white dots for eyes and some added orange lines on my pumpkins and some writing and it all dried with holes in it, I know it is probably air pockets but this seems like way to many they are everywhere. My cookies looked good until this happened now there are random holes everywhere. The lines even like split, I don't understand what the problem is? has this happened to anyone else?
Try reading this thread, I think it may help a little...
Lot of tiny holes is to much air in your icing. Mix it as usually, but cover it with cling film (directly on top of the icing and once more over the top of the bowl and let it sit for ca 2 hours. This works the same for glaze as for RI.