I did this quite some time ago for a friend who wanted to start a geek home website. Unfortunately he never started it and I don't have the original image this is based on anymore but it isn't too complicated to recognize. I've put it up now because "someone"

gave nice comments and I wanted to show off a little more.
Special feature: Signature sized (only four lines high). Press the Download link to get the real text and not only an image of it.
For those who have a hard time telling what it is I've done a
colored version which show the different letters directly with an own color for each of them.
This special piece didn't take me that long. I work mostly from images, it's hard for me to create something original. Unfortunately I haven't got the original image of this piece anymore, otherwise I would have linked it. I think it took me about 15 minutes or such, with slightly finishing tweaking half an hour.
But it really depends on the thing I want to do. For Oberth it took me several hours to be pleased with it. It really depends with the size and how well you know about what you want to reach. And I have to fanarts I want to finish for two other deviants in here but really haven't got too much beside that I want to do it. Many time goes into finding the perfect original to start off.
Still, it looks nice and good work making it signature-sized. Creative use of different characters, especially those square brackets. The G looks a bit weird, perhaps the 7 isn't the best character to use and it may affect the readability too. The K is my favorite out of these letters.