This is the video I ended up following pretty closely.
https://www.youtube.com/watch?v=cwa3NEd-_Ss&t=62s After watching a few and reading up on them I decided that this was the one I would attempt and I'm glad I did. I was going to do the paste version but I decided to go all out and do real sun-dried Tikki. They took about a week in the sun to dry, and I turned them over once or twice a day and brought them back inside at night. I just had them on a baking sheet on greaseproof paper. I had considered using the dehydrator as it's still winter over here but we had a run of warmer days and no rain so I just went for it and it worked out fine.
The variations I made were as follows. Firstly I made a 1/5 quantity of the video listed ingredients.
I substituted French Eschalots for Kashmiri Pran, which I ground with the garlic in a blender. Could have used Mortar and Pestle I suppose but why?
I used a few drops of Pillar Box Red food colour in place of Cockscomb.
I substituted Safflower for Saffron because of cost.
I saw on another video that only the Black Cardamom seed is used. Not the husk so this is what I did. She didn't reply to my question in the comments.
I can post the exact quantities of the spices I used if you'd like. It will be just as good made from bought Kashmiri Chilli Powder but I was thrilled to be able to use my own. You could use whole dried chilli and grind them yourself. I can also post the Recipe I followed for the RJ if you'd like. Of course you could probably use a jar of commercial Kashmiri Masala Paste just as effectively but where's the fun in that?