For the base of the hat I use the pattern just like the one for the owl hat here is the link…. http://easymakesmehappy.blogspot.com/2010/12/free-crochet-pattern-monkey-hat.html
For a child size hat I switched to black in row 8 and crocheted in black for 2 more rows on row 11 I switched back to yellow.
Once both earflaps are on the hat I did the border in a blue.
here is a link to the pattern I followed for the add on pieces for example the tongue and eye or eyes… http://www.ravelry.com/patterns/library/minion-hat-4
For the eyeball I did not use a button as a middle because of choking hazard
Round 1: with black yarn chain 2, 5 HDC in 2nd ch from hook join
Round 2: add brown yarn ch 2, 2HDC in each st around (10 st)
Round 3: 2 sc in each st around (20st)
I did add overall straps on each earflap I hook ch. 22 HDC in 3rd ch from hook across finish off and leave long tail for sewing on repeat for 2nd strap
button for overall E hook ch 2 6 sc in 2nd ch from hook join finish off leave tail for sewing.
I have only made a child size hat so far this was my first minion hat so I will be taking notes with each addition size I make.