You might think it's horrable but it really isn't anything that can't be controlled. THe tip about using Fray Check or Fabric glue is a good one and will work.
Now you've learned something about pulling the bobbin tread to the top and taking a few small stitches to lock the threads. Great!
Remember this . You are a student of quilting. We all are.
Everything has a learning curve. Don't fret. Lets see a picture of the quilt top!
peace :D