Vintage Teacher Valentine's Day Handmade Card

I created this card today with the help of my Sister's idea. I bought several old Vintage Valentine Cards approx 2-3 years ago at an estate sale. I just love the old vintage cards. Some of the cards have writing on the back with the year 1921 thru 1930's, and also the names of the people receiving the cards and those sending the cards. I wanted to show the back of the card with the dates and writings. So we came up the idea of putting the old cards in a clear plastic envelope so you could see the dates and writings on the inside of the card. I wanted to share this card with you and see what you think.

I created a square opening and enclosed the old Valentine card inside of the clear envelope. I have stitched the cardstock, patterned paper and the clear plastic envelope together, and then attached to my cardstock. It doesn't show the clear envelope with the old card very well in this picture. Then I added the ribbon and Prima flowers.

Any ideas greatly appreciated for these old Vintage Valentine Cards.