Well i have no authority to launch a GimpChat Contest, but i may propose one

"TWEAK THE REFERENCE" :

1) You may do a painting using as reference
2) you may use as lineart , as base for a color work
3) you may use any gimp tool or filter , even only filters and you may use mypaint
4) you may respect or modify the original :
you may turn animal and human in aliens, mythological creatures , or whatelse you may image, add or remove whatever you like
5) Whatever you do should preserve some similarities with the original
6) WIP may be be posted and disussed on ( New gallery topic to be opened )
7 )Timelinefor the final submission .... to be discussed with the mod (2 weeks ? )

2 possible "References " to tweak :

1) a sketch of a Italian landscape of the 16 century , taken on the Tiber, the river crossing Rome
(but again you may respect or turn in a imaginary landscape or what your imagination may suggest, including just use as was the "pencils" at the base of a colour paint )

Landschap met wachtende reizigers en veerpont bij de oever van de Tiber, Jan Both, 1644 - 1652
from https://www.rijksmuseum.nl/en/explore-t ... -BI-4211,7

Here is my go at it.
I just used your image PC.

Nice Rod !

I edited the first post to add another possible "Reference".
Do you think the rules are clear ?
Maybe we can pin the topic and give a timeline (i.e. 2 weeks )

Yesterday i posted a example of a (emulated ) gauche or acquarel work directly derived from a old incision
i don't repost here because didn't use the Images proposed ,but may be a example for similar tweak

message 7 here viewtopic.php?f=11&t=8356

No other submissions ?
Not even a WIP ?

Your (excellent) examples of intimidating - but a quick test

oh nice , i like mostly the first cool cartoonish effect
I was just playing with the same image ...

Yes all i did was create a new gradient layer and smudge it according to colors i wanted each section to be.
You could alternatively create color spots and smudge them around also. Then the colored layer is set to a different mode. In my case DODGE mode.

Another way is to simply paint the colors in with the brush tool.
Pretty easy effect to create a colored sketch image from drawings.



In the first image i posted i used a gradient (red. green,blue), and filled the top layer with that gradient. Then i smudged the colors to color the image below. I did add some colors here and there also.

@Rod
your technique is very effective and fast ,but the application may need some fine tune :
the green is perfect on the tree leaves but overlap often on the branches.

Yes i did this one too fast wanting quick results. I should have taken my time and zoomed in a lot.
The coolest part of this effect is the top layer after the drawing is finished. If you view it by itself it looks almost like a painting.

Wow Rod!
When I saw your painting, I thought super!
Now seeing your technique, I loved that it is so simple!
Thanks for sharing!

No problem. Glad you like the results. You can also get many different outcomes from different layer modes.

Another Wip not sure if the difference are evident, not only for the sketch style:
all the structure of the image was even if subtly modified by reducing the area without details