Dang...too late for any pertinent input. I'll post a couple thoughts anyways.
I'm not a Doctor, but I've watched half a dozen episodes of ER...
* unless you're really bleeding to death run it under the coldest water you can find. This does two things. One it dilates the blood vessels to help control bleeding, and two is that it cleans the wound out. Like they say, the solution to pollution is dilution!
*have your gauze or whatever ready to wrap immediately after you've pulled your hand out from underneath the tap water. pat it dry a little bit if you can, but it's not necessary to have it bone dry. NEVER take the gauze off to change bandages, keep wrapping over the old stuff, no matter how big stupid looking and clumsy it becomes. On a personal note, if you have a spouse, family member, or sprout a third hand during all this, it's great to put some Neosporin on the gauze before applying it. Once again it's two fold: #1 disinfectant, and #2, it don't hurt like hell when it's time to remove the gauze.
*Hold it up above your heart level- this can be done by propping it up while easing back in the recliner, but keep it above your heart for at least a good half hour or so.
* If it's really bad, reach underneath your arm and apply pressure to the Brachial artery. If it's this bad, it may not be a bad idea to swing into the local ER.
The Super glue trick, duct tape and splints have worked VERY well for me. Although since I learned this one, I did lose my reserved parking spot at the local ER, and they quit sending my my "Customer of the Month" coffee mugs...

Trick to this one I've learned is to dry up the blood, even if only for a minute to let it dry, otherwise you just wind up with a huge sticky mess. I've broken all rules of common sense and used a tourniquette for a MINUTE OR TWO, just to get the glue to drying. Also not a real good idea to try the Super Glue until your positive you won't be needing any stitches. Otherwise the doctors in the ER tend to become very frustrated with the mess you've created and look atcha like yer the dumbest thing that ever crapped between two legs. (not that I learned that one from personal experience

) Guess they never do become familliar with the concept of "broke as hell and no health insurance"
We're all adults here, and capable of using our own common sense and discretion, but if you think there's even remotely a chance of nerve damage, get into the Doc, ASAP, there's often a pretty narrow time window to rectify these matters before you're just plain screwed.
Please pardon me if this is redundant. I figured if nothin' else it might be good to share a few thoughts and review the basics.
On that note,I think the cut did look painful as hell, but extremely clean and well cared for. Maybe I'm just a wussy too....
Guess I'll get back to reading the Sticky and trying to learn this knifemaking stuff....