Probably. The magic is being channeled through you. If you think of everything in this world being magic, and it is only a matter of it being used properly, then... of course it would be your issue if your light shields aren't what you need them to be.
[Gokudera creates a light shield in front of her.]
Have you tried working off light magic that is already present?
[Is it odd he thinks she could create a stronger field using his as the framework? Then it would be a challenge for him to keep up the reinforcement. He's never tried to combine light magic with anyone else.]
hope this works c:
[Gokudera creates a light shield in front of her.]
Have you tried working off light magic that is already present?
[Is it odd he thinks she could create a stronger field using his as the framework? Then it would be a challenge for him to keep up the reinforcement. He's never tried to combine light magic with anyone else.]