Scroll to the top of the HOMEschool Fellowship forum and click on the icon marked "Profile".
Choose a picture from this page.
Right click on the image and go to "Properties".
Copy the URL from the "Properties" box.
Take note of the dimensions as you'll have to enter these into your profile as well.
On your profile page find the place marked "I have my own image".
Paste the URL into the space provided (you'll have to tick the little box as well).
Write the avatar dimensions into the "Custom Avatar Height"/"Custom Avatar Width" boxes.
Scroll to the bottom of the page and click on the "Change Profile" button.