Instructions
Turn on your Xbox 360. Log into the profile for which you want to create an avatar.
Go to the "My Xbox" section.
Scroll right and highlight your gamertag from the "Signed In" section, and then push "A" to select it. Use this method to select items for the remainder of this process.
Choose "Customize Avatar." The avatar customization main menu opens.
Select the "Change My Features" section. This area lets you customize your avatar's body. The "My Features" menu appears with eight categories: "Mouth and Chin," "Hairstyles," "Eyes and Eyebrows," "Face," "Body Size," "Ears" and "Color and Nose."
Select the category you wish to customize. If prompted, choose a sub-category. Dozens of customization options appear for your chosen category. For instance, if you choose "Hairstyle," pictures of various hairstyles appear, such as "Mullet" or "Teased Spikes."
Browse the category's options, and select your desired customization feature. If prompted, choose a color for your item. For instance, if you are customizing facial hair, you must choose hair color. Finishing customization for the category returns you to the main customization menu.
Continue customizing the other categories of your avatar until you are satisfied with its appearance.
Press "B" from the "My Features" category selection menu. This returns you to the main avatar customization menu.
Select "Change My Style." Eight clothing and accessory options appear: "Tops," "Headwear," "Accessories," "Props," "Bottoms," "Shoes," "Dress Up" and "My Outfits."
Select your desired customization option from each "My Style" category the same way you chose options from the "My Features" menu. Press "B" from the "My Style" main menu when you are satisfied with your look.
Select "Save and Exit" from the avatar customization main menu.