Help with adding a V border to the bottom of a photo

broomeGirl  wrote Thanks so much for your prompt reply.  Used the top answer but I see your answer would have done the job perfectly too

It's definitely one of those many roads reach the same destination situations.  Bojan place the V on top, I let it peep out from behind the white V.   I think we were both trying to keep it simple.  If you do it again, use the Pen tool, and maybe turn on the grid, or pullout some guides from the rulers — it's usually a help to have the rulers turned on when producing graphic content with Photoshop.

A few tips to move you forward...

When you turn on the grid, depending on how it is set in Preferences, the density might be too sparse, or as in this case, too dense.

I never change the grid settings Preferences, but rather change the dpi in Image size, with Resample turned off.

So at the moment Resolution is set to 72dpi, and pixel size is 1200 x 400.

Changing resolution to 200 (with Resample unchecked) gives us a more user friendly drid spacing, but has not changed the pixel size

I've turned off the grid because I don't want anything to Snap to it at the moment and dragged out a guide from the left ruler, and let it snap to the centre.  (Make sure Snap is checked in the View menu)

Now I'll pull out from the box where the rulers intersect, to the bottom of the central guide.  The vertical location is not important in this case.

The zero point is now in the centre of the canvas.

Note I changed the resolution to 300 because the grid was still too dense.

Using the grid to help, I've dragged two more guides.  Turned off the grid (Ctrl ') and used the Pen tool to craw the outline of the V.  You'll see why this is a good workflow in a moment.

With the workpath selected (which I renamed to prevent it being deleted) I go

Layer > New Fill Layer > Solid Color

Give it a name, and choose a colour.  I have gone with white for clarity at this stage

Now comes the magic.  Choose the Direct Selection tool (White arrow) and drag around our new shape layer (the V)

You can see above all five points are solid, which means they are selected.

Drag a window around the centre point.

Now only that point is selected. The others have a white core.

You can now drag that point to change the shape.  Holding down the Shift key restricts movement to up and down with now lateral movement.  Cool hah?

I've undone that, and dragged a window around the upper two points which both become selected.

And I can move just those points.  Whoops!  I forgot to hold down the Shift key

Note the advice window telling me how far the points have been moved.

Note holding down Ctrl (Cmd) toggles between Direct Selection, and Path Selection tools (White arrow / black arrow)

The above is how an experienced user would approach the graphic.  I used more resources above than I would have in real life, by way of demonstration.