Zombiebot Plushie

Based on Zombiebot Plushie by Crobots
It took me almost 2 days to figure this out. This was my very first crochet project!
The beige one was my first one, the head is too small because I didn't know how to count the rows right so it's missing like 4 rows.
The black one is the right number of rows and everything. I THINK! But it has a HUGE head and looks odd too. Also, on the black one it's eye is supposed to look like it's falling off. On both of them, it's supposed to look like their arms are falling off, that's why they look odd.
I still don't think I did it right, but here's my versions. I wish I knew what I was doing wrong, if you know or have any idea please let me know!

For the witch hat I followed the pattern on this website: http://www.favecrafts.com/Crochet-Amigurumi/Pink-Rabbit-Witch#
I followed the directions for the hat through round 11. I made round 12(Sc in next st, 2 sc in next st) around. Then round 13 (2 sc in every st) around. Then I bent the top of the hat and sewed it to the doll.

For the Broom I followed the pattern for the broom on the same site as above. Except when it came to "Rnd 3-13: Sc in each st around, join with sl st in first st. Fasten off" I just kep sc around not counting until I got the length that I thought looked right for my doll. I also judged the amount of "Bristles" by what I thought looked right for the size of my broom and doll.

Since I am new to this I hope I didn't make that too confusing.