The lower imgur pic above is an avatar-sized version of the upper imgur pic (compare it's size to my leverguns avatar).
So, for imgur:
1) Isolate the pic wanted for an avatar from the rest of the imgur pics via left-clicking on the pic.
2) At the bottom of the menu located along the RH side of the isolated pic is an integral resizer - select the avatar size (lower pic, above) by left-clicking on "small thumbnail" to highlight it.
3) Once the size is highlighted, higher in the same menu, select the "Direct Link" via clicking on it - the panel will turn green.
4) Copy the avatar url with your mouse on the green portion, then paste it into your avatar section here, with the usual [img] (etc) before & after the pasted url (leaving no spacing between).
Good Luck
Love & lollipops,
Pete
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