Oh, I don't make the majority of my icons - there are TONS of icon communities on LJ. One of my favorites is iconriot. He's got lots of good stuff. You just browse through the icons, right click on the ones you like and "save as" to your computer and change whatever file name comes up to something you'll remember, like "Bird icon" or "Heart icon" or whatever. Write down the name of the person/community who created it so you can give credit to them in the icon field.

Go to the link that says "Your Userpics", You'll see where it says Upload New Userpics. Click the Browse button and select the icon you just saved (ie: Bird icon). In the box that says Keywords, type in whatever you want to call the icon (ie: Cardinal), and in the comment field type the name of the icon maker, (ie: iconriot). Voila, you're done! You now have more than one icon (although I see you actually have two). Easy peasy!