You have to add an additional dense layer with 512 input units, and reduce the amount of training data.

You have to add L1/L2 regularization, and reduce the amount of training data.

You have to reduce the amount of training data and make use of training data augmentation.

You have to add L1/L2 regularization, and make use of training data augmentation.

You have to add an additional dense layer with 512 input units, and add L1/L2 regularization.