You need to browse to the place where you just saved your new screenshot. Click the blue Upload File button, and you probably recognize what to do from there. Then you'll see a field (empty box where you can type something) with a blue Upload File button on the right end of it. When you have the message editor open, look just below the message box for a small paper clip icon, and click it.

There are 3 ways you can show us the file or image. The next messages tells you how to put the image in a message. Now the image is saved in your file manager.

Click the last button, which would be Save or Export, or maybe OK or Apply, to finish.

Choose the place where you want to store the image, and give it a name.

If you're using Inkscape, File menu > Export PNG Image.

If you don't know how, just find File menu > Save As, or Export As.

If you know the program well enough, you can crop the image before you save it.

Edit menu > Paste, or if you can't find anything like that, try pressing Ctrl + v (which is the key shortcut for Paste).

Open Inkscape or some other graphics program.

(The clipboard is invisible.) (In Windows 10, Alt + PrtScr copies the active window only and saves it to OneDrive folder.) (Mac users don't have a PrtScr key, instead they can use Shift + Cmd + F5. This puts a copy of the entire screen on your clipboard.

Make sure that the contents which you want to make a screenshot of, are showing on the screen.

Here's how to make a screenshot on any kind of computer Type the name you want for it, and click the Save button.

Choose the place where you want to save the screenshot.

When you have the screenshot like you want, click the Save button.

If you messed up and you want to redo it, click the New button which is in that small window.

When you stop dragging, you just finished making the screenshot.

You can see it's drawing a rectangle around the area.

Press the mouse button and hold it down while you drag the mouse.

Put the plus sign/mouse pointer at one corner of the area you want to make a screenshot of.

The screen will get a little bit gray, and you'll see a very small window, and plus sign (or crosshair) where the mouse pointer is.

Click on whichever one you decided to use, to open it.

Right-click on Snipping Tool and choose either Send to Desktop (puts a shortcut button on your desktop) or Pin to Taskbar (puts the button on the taskbar) or Pin to Start Menu (puts the button on the Start menu).

In Windows 7 (and I guess Windows 10 too) go to Start > All Programs > Accessories.

Most operating systems provide some kind of screenshot tool. (Note, these instructions are written for internet novices.)

How to add snipping tool to taskbar