I don't speak a word of Korean but I believe I have worked out how they did this, or at least how to get a similar effect! I saw lots of people asking for a translation (Whilst looking for one myself) so hopefully, this will help someone: 1. Base color 2. New layer, clipped. Use an airbrush or soft watercolour to create a gradient using a vivid orange color 3. Do the same with a bright purple and lower the layer opacity to somewhere between 20 - 40% 4. New layer, clipped. Use the colors in the boxes (Left) to make the fabric look a little shinier using an airbrush. Lower the opacity to ~30%. 5.New clipped Multiply layer. Use a similar purple to before and add shading using a mixture of soft and hard brushes 6. Lower the opacity of the line-art or color it to help it blend with the rest of the clothes and to make it look softer. The last bit is showing results if you change the purple layers to a different color, but the orange stays the same.
> animemaster11 If you save the image then open it in your drawing software, you can press i (I think, it might be Ctrl and i together) to get the eyedrop tool, and then you can click on what colour you would like to use, then it will set your colour to whichever colour you click! On mobile, the icon will be down the side and look like an eyedropper
> suzy I'm sorry for the slow reply, but yes, I do so weekly! A speedpaint is where an artist records their screen or paper whilst drawing something, then they speed it up so you can see how a piece was made
> Animezs She's what's known as a Vocaloid, basically a computer program that sings that has a character connected to the program to represent it. There are just over 60 official ones I think, and she's one of them who sings in Korean ^-^