I sent this out yesterday but Layne posted his and it didn't post for some reason

so here it is.
Anyway I also agree whole heartedly on all the points made so far:
DP1 Use the best oil you can and get one that has a high flash point. Don't re-use oil as some change their chemical structure and become carcionagenic.
DP2 Yes, keep things simple, and remember some spices do not react well with others, e.g. Cumin if overused will kill every flavour including ist own! So stick to the ratios in the recipe until you are confident.
DP3, definitely; learn how to cook using your eyes and smell only, like Indian chefs do. Tasting during cooking will not give you the correct indication of what the dish will be in its final stages and may tempt you to add more spices!
DP4 Yes, vey important. Tomatoes in their different forms do different things to the final flavour. Use paste sparingly during the flash frying stage only; it gives the depth and sweetness to the final result. Use tinned or fresh in the latter stages as this will produce a fresher taste and also will 'crack' the spices to release their final flavours.
DP5 Yes definitely, I think I am consistent on this. You need high (flash), medium, and low (Dum) heats at various stages to fuse and release the spice's flavours. BIRs use high heat to cook and then put the dish under low heat (servery) for about 10 minutes to finish off.
LB 1-5 Definitely. I would just add; store your spices in a cool dark place (not the fridge!). Spend time on learning the skills of pan and oven roasting, it will pay dividends; and always roast spices separately.
CP 1 Write down what you do, when you do it, and what ingredient(s) and their weights that you use. Then you can go back and review your successes or disasters. If you are like me and like a glass of beer or two while you are cooking it is easy to forget what you have done.
CP 2 Make sure any you send to Layne are clearly marked and well packed! ;D
CP