Loose thread on corner

[judyday]

I am learning to use a ruler on the green border of my hexagon quilt first one I've quilted with my George. I stitched each line to the border and stopped needle down, moved my ruler and stitched to the next border. When I started the line sometime it appeared in could see the bobbin thread loop up. Sometime it stayed with the top thread until I stopped to cut the threads. I think my tension we okay because my stitches were good on top and bottom. Just wondering if I may have started too slowly.it seemed if I started faster it didn't happen as often anyone had this happen? I'm new to quilting and had my George since labor day.