If you have never tried fmq.....this quilt isn't the time to start! I would do a simple STID, any further quilting would only be if the batting showed stitching requirements of 2-4" or less and then would only try a big X in each square. Cross hatching would be nice, but can be very time consuming if you haven't tried it before. Even stippling can be difficult / frustrating until you get the tension just right or teach your hands to move smoothly. If you want to try anything other than straight line stitching on this quilt, I would first put together several practice sandwiches of same fabrics/batting to get the feel of fmq....it takes lots of practice to make anything look like it's supposed to....don't ask me how I know! Your quilt top is very nice....love the colors!