Ear sizing opinions!

I finally got my lovely unfinished partial that was original made by One Eyed Doe (not purchased from them, though), and I'm already trying to get some work done! I'm looking to make a Cardigan Welsh Corgi out of this girl, and I'm looking for input on her lovely ears! Under the cut I've put in a front, side, and 3/4 view of the head on a mannequin with the ear templates I sized out. If the bottoms look strange, it's because I'm putting gauges in her ears :)

Also, as the head is a resin base, I have no idea how to really go about attaching the ears.. do I glue them to the head? Do I sew them into the hood of the mask? Any tips would be greatly appreciated!!!