How to make a smooth ball trail

  1. What do you want to achieve? Keep it simple and clear!
    i want to make a ball trail like this:
    image

  2. What is the issue? Include screenshots / videos if possible!
    but i have no clue how to make it like that

  3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
    i have no clue

please help, what should i do

https://developer.roblox.com/en-us/api-reference/class/Trail

Yes i already have watched that video but the problem is how to make the trail triangular and smooth like this:

image

Nevermind. Ive already fixed it using a triangle texture attached to the trail texture, and texture mode set to stretch