The pattern is written using US terms.
The actual square is worked up in a single background color.
The flower is worked up in joined rounds.
The flower and leaves are worked up as appliques.
They can either be glued down using fabric glue or sewn on the background square.

Abbreviations/Stitches Used:
ch - chain
dc - double crochet
hdc - half double crochet
mc - magic circle
sc - single crochet
sl st - slip stitch
st - stitch