New
#661
For attaching pictures to your posts, have a look at this tutorial here on SevenForums: Screenshots and Files - Upload and Post in Seven Forums
In PhotoShop there's a layer effect called 'Outer Glow', but I don't think GIMP has that... Closest I can think of (and I apologise if it's wrong, I haven't used GIMP in ages), is to duplicate the layer and apply a blur effect to the layer below (or above and play with layer style).
Otherwise, this tutorial looks like it might work: Glow Effect | Gimp-tutorials.net - Gimp , tutorials , brushes , downloads, forum.