Those are easy! You use a stretched canvas, covered with batting and then with fabric (staple gun). The ribbon I stretched and staple gunned into place on the back. At every criss cross I sewed a button :-)
I did, and that was a fun, 1.5 hour project. Painted the letter, covered a record shadow box with fabric, made felt flowers, and glued the whole thing together.
“Life is not orderly. No matter how we try to make it so, right in the middle of it lose a leg, fall in love, drop a jar of applesauce.” - Natalie Goldberg