Create banners in Minecraft (1.15.2)?

I would like to recreate the following banner but have no idea how.

Please reply quickly ^^.

Craft the white banner, color the upper half red, then take the daisy and yellow dye and you're done

You need a loom, dye, of course a banner and, if you want, a banner template (as in the picture the flower in the middle)

Then you click on the loom, put in the banner and the dye and choose how your banner should look. If you also add a banner template, then you can paint your banner extended.

If you are wondering why you can only put a pattern on a banner, then you need to know that you have to get the finished banner out and put it back in the loom so you can add another pattern.

But you have to keep in mind that you can only add a maximum of 5 patterns (I think) to the banner.

If you use a banner template, it will still be there, so it will last forever unless you throw it in lava (xD).

You can craft a loom like this:

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# Spider web

■ wooden boards