a)draw a picture and save it by selecting 'file' and 'save as'.
b)You need a photobucket account for this step Go to your phtobucket account and select 'browse' in the uploading area.
c)Select your picture by searching for it in the 'my pictures' file.
d)Now press the 'Upload' button.
e)You should now be able to scroll down to look at your album under the uploading area and see your picture. Click the third yellow rectangle under your picture and you can now post this picture on Gaia by clicking Ctrl+V.
Hope that helped!
This is example. 