Photoshop Tip 1: How to Draw a Perfect Circle/Square
Here's a quick but basic Photoshop tip for beginners.Let's take a look at the toolbox and find the set of drawing tools as shown below. (To expand, left click on the rectangular tool and hold)
You can use these tools to draw rectangular or oval shapes, as shown below.
Now here's the trick, if you would like to draw a 'PERFECT" circle or a square, you must hold down the shift key while dragging your mouse.
That's it.
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Photoshop Tip 2: Unlocking The Background Layer
Trust me, there will come a time that you will want to
unlock the background layer, for whatever purpose.
To do so, simply "double click" the background layer on
the layer palette, as shown below.
You will then be prompted with a new window, simply click OK.
And you will now see the lock on the background layer is gone,
that means the background layer is now unlocked.
You can now drag the background layer up and down,just like all
other unlocked layers.
That's it.