Make two birthday cards #1

The cards must feature stamping in some way on the front of the card. That made me think about how and what:) I decided to challenge myself with a rubber stamping technique known as masking. All went well, happy dance here.
A handmade envelope to match the card. I choose the red on the card and created a red envelope.

card recipe:
craft sensations linen card stock ~ white
hema postcard card stock
designer paper
paper ~ black
designer paper
scruffy little kitten clear stamp
sheena rubber stamp ~ iris, a little bit floral
whiff of joy rubber stamp set hooray!! ~ greeting, tag
dovecraft clear stamps ~ handmade
versafine onyx black
ctmh exclusiv inks ~ black
su stampin' pad ~ ruby red
copic marker
zig wink of stella brush ~ clear
pearls