I would take that area out and redo the meander. The general rule with tension is: If the problem shows on the top, it is the bobbin tension that is off. It the problem is on the bottom, it is the upper tension. Since you are showing some areas where there are no eyelashes, I would say that your tension is actually fine but your speed is off. It takes a while to find that "sweet spot" where the speed of the machine and the speed of you moving your top come together. Happy practicing!