While enjoying this wonderful filter (Lyle Style) and created by Dinasset. I did a little variation which may be applied by the user to enhance the result.
I wrote a short tutorial about what are my steps to get it. Nice if it can be helpful someone.
Here you are this in PDF file.

Thank you Issabella, greatly appreciated

My pleasure, RJKD.

Another sample following the tut.

The train looks like it's going through "winter wonderland". It really captures the atmosphere.

Thanks Tin.

applied Issabella's tutorial in an heretical way, as usual by me...

That is stunning! Just the effect I originally started using GIMP to produce, share the heresy please?

My "heresy" is this:
1-used chisel/carve instead of bevel (better for my eyes), and used on the original (tulips on transparent BG)
2-in the final step, before putting the tulips (modified by LyleStyleDetails), over the chosen BG (modified itself by LyleStyleDetails), I focus-blurred the BG.
That's it RJKD

Brilliant, that should keep me quiet for a while, thank you.

By blurring the background a bit it's a very clever addition Dinasset to the final result. I like it. I am applying it in some results. Thanks.
If someone wants me to add this Dinasset's hint to the pdf file, I'll do it.

Issabella: You and Dinasset always have such good ideas for improving images. Please add Dinasset's to your PDF. Thank you again for helping all of us improve.

Thank you Pat, If any doubt, please let me know. I added the update tutorial just at the beginning of the thread.