Sparks in the first section of the cave

In the screen shots below I was testing out sparks and lighting in this section of the cave for when the cart banks around the corner. The sparks started off quite long and dense (pic.2) . Then I reduced the number of particles and the life span to make them shorter and sparse. In (pic .5) you can see where I added a point light to the lantern to omit light to brighten up the area below. Pic .7 is what I finally decided the sparks should look like with them randomly omitting as it goes around the corner with a light the flickering on and off at the same time.