I learned a lot while doing this like about hue saturation and color lookup. I also learned things like Brightness and contrast. The last thing that i learned to do was replace color.
Post card:-For the first one i learned a lot of things like copying and pasting, using different layers to put it all together. Also i learned how to use the text tool to write different types of text and give my card a title.
Shapes- I learned how to use the different shape tools. I also learned how to change the foreground color for these shapes. I also used the custom shape tool to make some of the harder pictures.