Well it took a while...
At last I managed to make a box from one sheet of A4 c/stock that would hold
4 cards with envelopes.
As you see the holder is not decorated, as yet. I was just so pleased to have succeeded.
Cards:
The idea for Super Owl came from a card we made at Stamp Club (middle photo, right card).
We made a super hero dog card and as I don't have that stamp set,
I noodled the idea and made a super owl using the same layout theme.
Now to produce some more holders, and turn them into lovely gifts.