Uploading and Editing Your User Photos in Mixi
Once you’ve successfully signed-up, you’ll want to add some personality to your Mixi pages… here’s how:
On your main Mixi page, click on the “Edit Photos” link in the top left area of the screen (English screenshot here – Mixi English Screenshot)
This will take you to the Edit Photos screen below. If this is your first time, there will be no photos and 3 placeholders for you to replace with your own images. See what it looks like below in both English and Japanese screens:
Let’s get started and upload our pretty face. Go ahead and click the “browse” button. This will open a dialog bo, allowing you to browse your computer for the photo you want to use. After choosing the photo, you will be returned to the same screen.
To upload the currently selected photo, click the “Upload a photo” button.
Voila!
You can now see your photo and room for 2 more. Let’s add those 2 more photos now by repeating the steps above 2 more times.
Good job, your photos look great 
Now you will have some photos and underneath it will say “Delete” and either “Set as default” or “Default”. By default, it means the photo which will show on your Mixi page which other people see. They can see all of your photos, but it takes an extra step on their part, so choose the photo you most want people to see as your “Default”.
Here are the English and Japanese screens showing you where these buttons are:
That’s about it, you have now achieved the rank of “Mixi Grasshopper”. Keep reading these tutorials and as you master the skills of Mixi, you can progress through the ranks of “Mixi Mushi-king”, “Mixi Salaryman”, “Mixi Salaryman with company spending account” and finally “Mixi Miyagi”! Ganbatte (Good luck!)