Tutorial - How To Get A Minecraft Optifine Cape - 1.8.3
Links:
Optifine:
http://www.optifine.net/donate
Banner creator (for cape):
http://www.needcoolshoes.com/banner
Color Picker (For customized option): http://www.colorpicker.com/
Optifine Installation tutorial: • Video
3 side notes:
1. Its paid
2. Customization is limited to a banner
3. Only people with optifine can see it (most people have optifine)