[1.8.9] Custom Potions

[blahblahbal]

I've run into a wall trying to figure out a custom potion. I want to make an effect similar to the 'on fire' effect, but in a potion, and with a different 'blue fire' texture. I've made the texture, and started a file, but I'm not sure how to go about applying the damage and using the new texture.

 

Here is what I have so far:  http://puu.sh/nMCYU/2d4dab8c82.txt

 

It's not much (and I would have uploaded it to GitHub, but I keep uploading incomplete things and I want to stop doing that), and I'm not sure if I've even done it right.