Your message sounds, to me, like your problem isn't that you don't know how to paste a layer from one image to another in UF, but that it "changes the whole fractal". If I've understood right, then what you are seeing sounds like its due to the fractal properties "Merge Mode". Its the little drop down window in the upper left corner of the Fractal Properties, Layers window just above the layer stack-up. If the layer you copied was "Normal" merge mode, then when you paste it atop the layer stack of the second image it will be the only layer showing, as with "Normal" merge mode, none of the layers below it are visible or able to interact/merge with the new layer. Its 100% opaque. Try changing the merge mode of the layer you pasted and see if you can now see the one(s) below it. "Lighten" merge mode will let the layers under show without their colors being changed and the shapes in the new layer will look superimposed on top of the lower one(s). "Screen" does the same, but lightens and washes the colors out a lot and maybe you'd want to lower the opacity of the layer with the layer opacity slider just to the right of the merge pull down. Try all the merge modes - after a while you'll learn and know roughly what each of them does and be able to use them to great advantage in coloring your fractals. Rick