So i have started to try and make my own reeds. I have read everything i can on the subject as far as I know, but head knowledge only gets you so far! After a weekend of trial and error I have a reed that is crowing. But the note produced is C rather than G.
I’m not sure where to scrape now to lower the crow note, can any reed guru’s out there suggest what i could try?
Here is an image of the reed. https://www.box.com/shared/rfke5jfjdfw5gio7p26j
The reed is made from french cane.
I am no reed guru but I can suggest some thing that might have went wrong.
When I am having a look at your reed, it seems the scrape is quite heavy. This actually suggests that the crow would be flat. So this seems to be a really strange case.
There are some problems I could actually think of. The first is a leaky binding, it looks like you used normal nylon thread with a bit of beeswax to bind the reed. This can develop leaks really quickly, it is better to use cobbler’s wax, as it makes the thread more sticky.
Also the slip could be much too thick. I believe it is a good idea to measure the slip thickness (in the center of the slip) when you are beginning to make reeds. It should not be thicker than 1.5 mm. It is especially important that the slip is even along the length. I made several slips, which were half a millimeter thicker in the middle than at the sides. So this could also be a problem.
In addition to that, it would help to see the sides of the reed to determine if there are any leaks along there.
Maybe the lips are too thick, too. You can compare it with the reed you have, but I believe different reeds need a different thickness at the lips.
You should also note, that I am a theoretician more than everything else 
and with all my attempts I only produced one reed, which was not totally bad. I thought, I would just share some thoughts what could have went wrong according to my experience.
Edited to add:
The reed does also not need to crow exactly at g for a concert pitch chanter. My reed (from the maker) crows sharp of a and works quite well.
Hi Tilori, thanks for weighing in. Putting guru in the title was a mistake.
I hear you about the cobblers wax, i have some on order, but I did check the reed again and its not leaking. What you can’t see from the picture is a layer of plumbers tape under the binding.
It was intresting to hear you have a reed with a crow around A in pitch. After a bit more scraping around the edges I have got the reed’s crow down from C to A.
I put it in my chanter and it plays which i took as a minor success. Back D was very sharp and bottom d a little unstable, but they were there. C nat was the only note missing completely.
I’ll keep messing with the reed and see what i learn, then start another one.
If the back D is way to sharp and the lips aren’t too open, the reed head is probably too narrow, the staple too deep inside the reed or the staple is too wide. You could try disassembling the reed and binding it back with the staple pulled back a bit. If the staple you’re using is supposed to be the correct size, then I would try a wider and longer head next time. You can always shorten a too long head while doing the scrape and tuning it, but you can’t make it wider once it’s cut to shape. Good luck! 
I have been following the specs the pipe maker suggests for a D reed on his site as closely as i can. So I’m pretty confident of the dimensions of the reed. I’m sure their are a million tiny variables my amateur hands have introduced though.
I’m going to definitely try repositioning the staple like you suggest. Thanks for the tip.