Wonderful blocks, congrats! The possibilities are limitless for your finish. Choose something you like, draw it on paper to see how it will look, be prepared to change your mind several times. If you choose to applique between blocks introduce or audition the new fabric next to the blocks so you can see if they play well together before you commit to cutting. With those blocks you can use almost any pantograph for quilting. I'm more linear so I go with the block shape, but the best quilts I've seen vary the design to achieve 3-D affect. Sure would like to see a picture when you finish. I bet the back will be as interesting as the front!