@MrsP-from-C The attachment shows here. Downloads as well. Might be browser thing. However you might get the idea from this. (if it shows)
(1) The problem with lighting effects is it is a very old plugin (It has been tweaked to keep it alive but..Version 0.2.0, March 15 1998). The effect is applied to the layer and there is no going back, except for a ctrl-z undo. No reversible layer effects (fx) with this one.
Older ways might be a simple duplicate the layer as a backup
Do all your layer mask editing first, then a new-from-visible and apply lighting effects on that.
(2) The layer stack looks a bit odd. Lighting effects on that grey layer ?? Don't like the effect, fill with grey and do the lighting effect again.
There are other ways, the gmic_gimp_qt plugin has a "light leaks" filter, but that is not future-editiable either.
(1) The problem with lighting effects is it is a very old plugin (It has been tweaked to keep it alive but..Version 0.2.0, March 15 1998). The effect is applied to the layer and there is no going back, except for a ctrl-z undo. No reversible layer effects (fx) with this one.
Older ways might be a simple duplicate the layer as a backup
Do all your layer mask editing first, then a new-from-visible and apply lighting effects on that.
(2) The layer stack looks a bit odd. Lighting effects on that grey layer ?? Don't like the effect, fill with grey and do the lighting effect again.
There are other ways, the gmic_gimp_qt plugin has a "light leaks" filter, but that is not future-editiable either.