Here is a simple guide to renew your old ski helmet
Step 1: Take Your Helmet and Material
-The helmet .. obviusly :D
-The paint, in my case, green paint, h2o based
Step 2: Scotch Tape
You have to set the scotch tape on thehelmet, to isolate the parts that you don't want to paint.
Once you have isolated, use the paint with the brush on the helmet.
You can start with small parts..
Once you have painted the parts, let them dry for 15/20 minutes
Step 3: Draw Something on Helmet
if you want to drow something is the same work, just use your strap scotch to draw lines or figure that you want to fill qith colors. like the photo.
Step 4: Finished Work..
This is my personally helmet.
Easy to do.
Once you have finished to paint, you have to panti the helmet with a transparent panti gloss, to secure the colors on the surface
here is the video https://www.youtube.com/watch?v=l5GhtCFg3ZU.