You'll need some filler. Pony beads work really well, but dont ask me where you can find them. If you know, tell me :)
Here's the free pattern on raverly by Joyce Yu. It comes as a PDF file and I was so happy I didnt have to alter it at all! I used Simply Soft yarn by Carron and a G hook. Took a couple of tries to get it looking as good as she did though. Have fun!