Ok. First off...pick your colours...you can either do a palette...OR, you can do what I do:

1. Throw together random colours that go relatively well together

2. Blend all of the HEX colours you used, in equal amounts, to produce a base. I just give ChatGPT all the HEX codes and tell it "Yo, mix all of these together equally"

3. Merge a percentage of each colour with the base, to build a good palette...I use this website for blending HEX colours: https://meyerweb.com/eric/tools/color-blend/

Here's a piece I did, before that stuff with the HEX codes, and after...

See the difference it makes? (Ignore the extra detail)

Now for actually making the pixel art...here's my method:

1. Start out on the smallest canvas that could support what you want to make

2. Make the basic shape of your pixel art

3. Export at double the size

4. Use the extra pixels you now have, to add more detail

5. Repeat steps 3 and 4 until your pixel art has all the details you want in it.

That's the way I do pixel art. And I use Pixilart for making it (https://www.pixilart.com/draw?ref=home-page)