I think you have picked beautiful fabrics and colors. I know the normal advice is to start small, my first quilt was a full-size quilt for my daughter, which I handquilted (might I add the only handquilted bed quilt). The second was an over-sized king quilt for our bed (after all one good turn deserves all the covers). I used a basket block done as a crib quilt in a magazine and figured - oh I just have to make more blocks!! lol. I did make more blocks, and more blocks - and "Basket Case" was born. I even machine quilted it - also my first time. Go where your heart takes you and you'll do fine. You go girl.