First clear the five Icing on the fourth and fifth rows. Doing this will create more space in which you can make special candies. You will have to make the special candies to not only pop the kernels but also to detonate the Cake Bombs.
With the Icing gone and with candies of five colors on the playing field you shouldn’t have too many problems making special candies. It comes even easier to make special candies once you detonate the Cake Bombs. Keep in mind that kernels can only be popped when hit by special candies, so make special candies accordingly.
Match candies near the bottom of the playing field as often as you can. Doing this will shift the largest amount of candies, hopefully start a chain reaction and create new opportunities to make special candies.
While matching candies at the bottom it can be easy to ignore making special candies at the top of the playing field. So pause after every move and glance at the entire playing field to see whether you can make special candies. It would be a waste to miss out on a chance to make a special candy only because you didn’t take your time.