MelvynDec 21, 2025

Thumbfa.st : Create thumbnail

Thumbfa.st : Create thumbnail

Melvyn

Learn how to create effective prompts for image generation using image references to replace specific elements like logos. The video also covers adding details and managing generation variations for optimal results.

Thumbfa.st : Create thumbnail

Melvyn

Learn how to create effective prompts for image generation using image references to replace specific elements like logos. The video also covers adding details and managing generation variations for optimal results.

Transcript

00:00

In this video I will help you to create a good prompt for your generation.

00:04

So we will start by filling the image.

00:07

Okay, so normally you have your own character.

00:10

You will use for example this character, this character has a name.

00:14

Okay, Melvin.

00:15

Then I will use the still reference.

00:17

So for example, this video where this man is burning an iPhone and I will then want for me to burn the logo of cursor.

00:27

So how I will ask this.

00:29

So you don't really need to ask to replace the character because this will be done automatically.

00:35

But you can say replace the iPhone by the cursor logo.

00:43

And you can make parenthesis image 1 because this prompt will have the name of the image.

00:51

So here image one as a reference.

00:53

So here replace the iPhone by the cursor logo image1 and you can add then some specificity like with plain white backgrounds.

01:07

So then you can click on this generate and generate first variation.

01:12

You need to take care because each variation is a cost.

01:16

So in the beginning I will advise you to only choose one variation and to avoid to create three, four or more variation at once because it may be a bad result because your prompt is bad.

01:32

So after we validate the prompt, we validate the image, we can increase the number of generation.

01:37

So yeah, we have the result.

01:39

It's pretty good.

01:40

We can see that the prompt work really well in general everything is good and the logo is good, is in 3D and we already have a good result.

01:50

Okay, so here we can just iterate, maybe change the shadow.

01:54

But I really like already the result.

01:56

We can see that the background is respected.

01:58

I will show you another example with more item.

02:02

So this second example showed this thumbnail, as a reference.

02:05

So I will just show it to you.

02:08

So it's like this.

02:09

It's me shocked with this logo with move to trash and here another logo.

02:14

So here I have image one image two and I will have this reference and I will write image.

02:21

Image2mistrallap Replacing the current Gemini icon.

02:26

Okay, so here we have Gemini icon.

02:28

And I ask Precisely that the image 2 will replace with write and mistral 2 the logo move to trash contain the image 2.

02:39

here the image 1 the cloth logo background stay neutral.

02:44

So as you can see, I didn't ask to replace the character.

02:47

I didn't ask anything specific.

02:50

I just asked the thing I want to change because he know that he need to use these references.

02:55

He know that he need to use this person and he know that he need to use this image.

02:59

So with this I get these three results.

03:02

So we can see that it's pretty good.

03:03

For example, this one that I like, if we click, we can see that he replaced the logo with Mistral.

03:10

He replaced this with cloth and he had a shitty background that you can ask to remove or something.

03:16

And at the end I get this result.

03:17

That was pretty good.

03:19

So here you can always reference image by using the name and you don't need to add any other information.

Thumbfa.st : Create thumbnail — Tella