1) Log into the superhouse website.

2) Go to your profile.

3) Go to the edit menu in the upper left hand corner of your profile. 

Choose "Update your image"

4) Pick an image from the gallery.

5) Or upload your own.

Note:

If you upload your own photo, the size is limited to 300 pixels wide by 500 pixels tall.  You will need to resize your image to get it below this size before uploading it.