First post!
Difficulty: So-so. Knowledge of curves and colour balance needed.
Transferability: As usual, easily translated.
Step 1
Base imageNew raster layer, fill with
#06004b, set to Soft Light at 28% opacity.
Step 2
New raster layer, fill with
#000235, set to Exclusion at 100% opacity.
Step 3
New raster layer, fill with #a9ecff, set to Burn at 100% opacity.
Step 4
New raster layer, fill with
#E298F4, set to Soft Light at 100% opacity.
Step 5
New raster layer, fill with
#E4F597, set to Soft Light at 100% opacity.
Step 6
Duplicate layer, bring to top, set to Soft Light at 100%. Flatten layers.
Step 7
Colours > Adjust > Curves
My settings Step 8
Colours > Adjust > Colour Balance
My settings Step 9
This gradient (by me) set to Soft Light at 47% opacity.
OPTIONAL
Step 10
This light texture (by me) set to Screen at 100% opacity.
Remember, experimenting is key! Not all images are alike.