Brilliant curry debrief & pics rubydoo. I've made banjarra paste loads of times & think yours looks more or less as it should be. Most photos on here look a little brighter. The onions always flinch first in a game of brinkmanship, so you've probably got a good paste there. I normally whack a bit of it into most curries i make & its flavour seems to change against the ingredients of different dishes.
The dish it's self looks very good, better than some of the stuff they charge a tenner for here. I must have eaten kilotonnes of this - Ashoka jaipuri is the only one which doesn't have mushrooms

should taste quite peppery. We normally ask for madras heat tikka jaipuri, which can pack a few psi in Glasgow
I've found the taste & smell of coconut becomes apparent when the dish cools, coconut is common in curry bases here although i'm not sure if its added to the jaipuri main dish across the board in Glasgow, difficult to tell.
Very garlicky is the Ashoka indeed - ditto about the pre frying & turmeric
You've weighed in heavy with this effort ....who's going to follow it up ?

Regards
ELW
Edit- did you use gm instead of mix powder?