Choose ‘Offset Path’ again as in step 9, but this time make the offset size smaller. I used 0.3mm.

While this new outline is still selected, click on the colour swatch and choose an outline colour.

Deselect the logo. You may now find that you don't like the positioning of each letter in relation to the next.
Press "A" on the keyboard to select the "Direct Selection Tool" once again.

While holding down the ALT key drag a box around the last 2 letters as shown.

You should just have the whole of these 2 letters selected. Now just hit the "right arrow" key until the letters are positioned how you want them.

You can now perform the same process with the outside "O".

That's basically it for this tutorial. You can always play around with colours or any of the settings throughout this tutorial to achieve the effect that you want.