Скачать или смотреть Basic image editing in Photopea

In this video I will show you how to get pictures into a Photopea/Photoshop file, select and remove the background, intelligently merge and save an image to be placed in another .psd.

Edit: Yikes. Just realized it's a parallelogram and not a trapezoid. ... Please adjust your expectations.

Key Tips:
To add to a selection: hold Shift and proceed with selecting
To subtract from a selection: hold Alt and proceed with selecting
To modify the colour of a layer: Ctrl + U, and click Colorize in this case
To select the pixels on a layer (such as the grey trapezoid): Ctrl + click on layer thumbnail
To merge all layers into a merged layer at the top: Ctrl + Shift + Alt + E (all at the same time!)
To select the opposite area from what's already selected: Select \ Inverse (or Ctrl + Shift + i)