can it be done

You don't need Falang

This is true, but if you are making 10 languages on the page and the page has a lot of content, an external component (e.g. Falang) will allow you to do it faster and easier, without copying all page elements 10 times.

media\templates\site\cassiopeia\images\mod_languages\en_gb.gif

I don't know if I understand you well:: In this place I add a new flag image?. Does your way only change the flags on the front of the page? .Can this be overwritten in the page template? I just replace the images flag there and the css path shows here And it changes the flags exactly everywhere, which annoys me a lot because I want to change them only on the front of the page.Joomla was created a long time ago and no one ever came up with the idea to add much needed options in this language change module like, "replace image" flags "

I want to change them only on the front of the page

ah ok, then I can not help you more. The solutions would be to make a CSS work to place other images as background, or duplicate the module (by code) and change the settings you need

the solution I gave to you is the template override technique from Joomla

No We didn't understand each other at all because my English is poor.
I wanted to make the images with language change flags larger, by default in Joomla they are 18-12 px gif
And I wanted to change them to a larger 30 x 22 px gif

I know that they are downloaded from the place:

media/mod_languages/images/

will change in places:

1. joomla backend
2.Page front

And I want to change it ONLY here

2. Front side

front side is not the same as homepage (front side = all pages in front)
I have given you a solution for the override on all pages, but this is totally out of the scope of Template Creator CK

Your solution doesn't work and doesn't change anything.

media\templates\site\cassiopeia\images\mod_languages\en_gb.gif

I used this option : And it does not change . Does not show new flag images with different sizes
That's why I asked a few questions, I know that you do not have to answer them because they are beyond the capabilities of the Tempate Creator CK component.
Therefore, despite not solving the problem, thank you for your help. Best Regards

I have tested the solution by my side using Cassiopeia and it works
are you sure that you put a GIF image ?
I will try with a template made with Template Creator CK, to see if there is something that is different here