yes, thanks for the reply, but i want to add a layer once all is loaded and align the new layer with the others. The "New Layer Stack" impose me to create an all new file. i want to take a picture, and load it in affinity. take a new shot, add it as a layer in affinity and then align it to the one existing. once that done, i add a mask layer to the 2nd picture to correct my first picture, take a new shot that correct new stuffs i want to correct (shadow, an object,...), add this shot as a new layer, align the new layer with the all others, and then add a new mask layer, and so on... if i must close all, and reload all each time it's a waste of time for me. photoshop can do it as you can see in the youtube link i've posted, i just wonder if this kind of option have an equivalent in affinity.. i hope this time i explain better what i'm trying to do ..