For the rose:

2,5 mm hook
ch 56
sc along
sc in 1st sc, (skip 3 sc, 8 dc in next, skip 3 sc, sc in next) 2
(skip 4 sc, 12 dc in next, skip 4 sc, sc in next)2
(skip 4 sc, 15 dc in next, skip 4 sc, sc in next) 2

For leaf:

2,5 mm hook
ch6
slip st, sc, hdc, 9 dc, hdc, sc, slip sc in ring. join.