1 Open a tube of your choice. Duplicate it twice (close the original).
2 With the selection tool, select a small square within the tube
Edit Copy.
Edit Paste Paste as new image.
This will become your pattern to put in foreground.
3 Open a new transparent image, 300 x 300.
4 Effects 3D effects Buttonize : 9/10/100/transparent edge/black color.
5 Selection Select all.
Selection Modify Contract : 20 pixels.
6 Effects 3D effects Buttonize : same setting as in 4.
7 Selection Select all.
Selection Modify Contract : 20 pixels.
8 Effects 3D effects Buttonize : same setting as in 4.
9 Selection Select all
Selection Modify Contract : 20 pixels.
10 Effects 3D effects Buttonize : same setting as in 4.
Do not deselect the last square.
11 Layers New raster layer.
Flood fill with white.
Move this layer underneath the rest.
Deselect.
12 Layers, new raster layers.
Move this layer under all the others.
Flood fill with the pattern you created in step 2.
13 Effects Distorsion effects Spiky halo with these settings :
Horizontal : 0 - Vertical : 0 - Amplitude : 100 - Frequency : 35, Radius : 16 Check Wrap.
14 Layers Merge visible.
15 Image Canvas size : 450 x 450.
16 Layers Duplicate.
17 Activate the bottom layer.
Image Rotate Free rotate : 45 °, uncheck « all layers ».
18 Paste your tube as a new layer.
19 Layers Merge all.
File Export JPEG optimizer.
