A couple of weekends ago a bunch of us went down to my Sister-in-laws and had a weekend crafting extravaganzaa. We made a bunch of these poinsettias from Heartfelt Creations (and some roses too). Square cards are not my normal size but it worked well with this DP. This will fit in an envelope - it will just squish the flower a little.
Come on over to the Cards in Envy blog and see what the rest of the design team came up with. Then link up your circle frame cards with us.