Hello, MrBigDaddy146 here Here I will be giving you instruction's on how to add your own cape to Minecraft with Optifine. (Hence you will need Optifine installed!) 1, You will need to sign in (with your Minecraft Account) and donate to Optifine to even obtain your cape. 2, Goto needcoolshoes.com <Link Here> and create your cape design (Now dont worry it may say banner but this will still work for the capes.) 3, Once you have done your cape design and donated to obtain your cape goto the Optifine site and look for the group section called "Select a new cape design" and there should be a URL box. On the needcoolshoes.com site were you have hopefully created your cape there should be a Share link. Copy that link and paste it in the URL box on Optifine press save and boom you have your custom cape! I hope this helped you obtain your own Minecraft Optifine Cape! This has been help and support for custom capes with Optifine. -MrBigDaddy146