This little buddy works up fairly quickly with minimal sewing for the face mask.

You will need to know the basics.
Stitches used:
mr - magic ring
ch - chain
st(s) - stitch(es)
slst - slip stitch
sc - single crochet
hdc - half double crochet
dc - double crochet
inc - increase
dec - decrease
flo - front loop only
blo - back loop only
tcBS - treble crochet bobble stitch