Colybrix, thank you very much for your permission that I may translate your tutorials

 Tutorial here

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Plugins

It@lian Editors Effect

Graphic Plus

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Colors

Color 1, foreground : #c0d4f0

Color 2, background : #e7e8f2

Color 3 : #7b81af

Color 4 : #ffffff

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1 -  File - New  875 x 525 pixels transparent

Fill with linear gradient colors 1 et 2

 2 - Open "paysghiver16-coly" - Erase the watermark

Edit - Copy

Edit - Paste as a new layer

Image – Mirror horizontal 

Image - Resize 83% all layers not checked

Layers - Duplicate

Close the copy layer

 3 - On the layer below (the mis)

Effests - Image effects -  Seamless Tiling (Side by Side)

Adjust - Blur - Gaussian blur 10

Layers - Merge down

 4 - Adjust - Add/Remove Noise - Add Noise

Layers - Duplicate

 5 - Effects - Geometric effects - Skew

 6 - Effects - It@lian Editors Effect - Effetto Fantasma, by default

Effects - Edge effects - Enhance

Effects 3D - Drop shadow  8, 8, 70, 15, color 3

Effects 3D - Drop shadow  -8, -8, 70, 15, color 3

 7 - Open top layer and activate

Pick tool (k) - Position X 219 - Position Y 0 

 8 - Color background - White

Layers - New raster layer

Fill with white color

Layers – New mask layer from image – select NarahsMasks_1752

Effects -  Edge effects -  Enhance

Layers - Merge - Merge group

 9 - Layers - New raster layer

Fill with white color

Layers – New mask layer from image – select NarahsMasks_1754

Effects -  Edge effects -  Enhance

Layers - Merge - Merge group

 10 - Image – Resize - as on the picture

Pick Tool (K) Position X -9,  position Y -92.

 11 - Eraser tool with these settings

Lightly erase on the bottom edge (4-5 passes on each side)

Before

After

12 - Edit - Copy "sol neige droite"

Edit - Paste as a new layer

Objects - Align right

Objects - Align bottom 

 Edit - Copy "sol neige gauche"

Edit - Paste as a new layer

Objects - Align left

Objects - Align bottom

Blend mode Luminance (Legacy) forthese two tubes

 13 - Image – Add borders

1 pixel – color 3

5 pixels – color 4

14 - Select - Select all

 Image – Add borders

5 pixels – color 3

Selections – Invert

Effects Graphic Plus - Cross Shadow

 15 - Select - Select all

 Image – Add borders

20 pixels – color 4

Effects 3D - Drop shadow 0, 0, 50, 15, black

16 -  Select - Select all

 Image – Add borders

5 pixels – color 3

Selections – Invert

Effects Graphic Plus - Cross Shadow - same settings

17 -  Select - Select all

 Image – Add borders

30 pixels – color 4

Effects 3D - Drop shadow : 0, 0, 50, 15, black

Selections – Select none

 18 - Open "flocons bordure"

Edit - Copy

Edit - Paste as a new layer

Don't move

19 - Open "dessin77-anim55-coly" Erase the watermark

Edit - Copy

Edit - Paste as a new layer

 Mirror - Mirror horizontal

Image – Resize 70%, one layer only, don't forget to check the Lock proportions box

Move to the left

Effects 3D - Drop shadow : -5, -5, 50, 15, black

20 - Open "ours"

Edit - Copy

Edit - Paste as a new layer

Image – Resize 50%, all layers not checked

Make a rectangle selection like this

Delate

Place against the bottom right border

Effects 3D - Drop shadow -5, -5, 50, 25, black

 21 - Open "WA - Douceur hivernale-creaColy"

Erase the watermark

Image – Resize 70%, all layers not checked

Move to the top right

Effects 3D - Drop shadow: 2, 2, 50, 2, black

 22 - Add your watermark

Image – Add borders

1 pixel – color 3

Image – Resize 950 pixels

Save Jpeg

If you want, you can send me your version 

 If you have problems, or you find a not worked link, write to me

Une autre version avec des tubes de Tine et Colybrix

Thank you so much Kika

Thank you so much Etelka