Create Highly Realistic Shadows by Detaching Drop Shadow in Photoshop:
Now have you used drop shadow before I guess you have now what does the drop shadow do now when you add a drop shadow as you can see in this it makes the object as if it's coming out of the screen what if you want to make the object stand for example I have add a drop shadow here and if you go to the properties of the drop shadow and if you increase the distance this is called the distance if you increase this this increases the distance of the subject from the surface in this case you have added we have added drop shadow in this circle right and as I increase the distance what's actually happening is shadow is moving away and the object is coming towards you what if you want to make the object stand like this then you need to detach the drop shadow the drop shadow is already detached but then you need to take the drop shadow into a separate layer and modify that so I'm pretty excited there ain't nothing to it but to do itself without any further ado let's get started.
So here we are first off and by the way all the images shown in the tutorial is available for download check the link in the description below okay so it's gonna be very useful in creating composites these creating shadows right so let's create a simple composite today to show you how it actually works so what are you gonna do we gonna select this ball and we're gonna place it here so this is a round ball so the best way to selected is using the elliptical marquee tool but elliptical marquee tool creates an ellipse right we need to create a circle how to do this okay to create any proportional object one is to one to create any proportional object ratio 1 is to 1 like square circle all you need to do you need to press and hold shift okay so when you drag down press and hold shift C this creates a circle now let's go ahead and zoom in to create a better selection now when you create a circle selection of this where to start a selection the answer is we don't know we don't really know it's not necessary that you start if you start a selection here it's gonna create a perfect selection so what to do here's what you do press and hold shift follow along press and hold shift okay hold down the left mouse button drag and make a circle now the mouse is still held and the shift is also still held now what you do press and hold spacebar shift is still held mouse is to health press and hold spacebar
When you press and hold spacebar you can move the selection okay so when you take the selection here okay it's good okay leave the spacebar shift is still held you're gonna make it a little bigger press the spacebar again move it there leave the spacebar and make it a little big and therefore you adjust now this is not a perfect selection but you basically have the idea of how to do it now this does it very quickly depending upon what shape your object is in now I think this is a good selection so I would make it a little smaller there we go that's pretty good right now there's a little bit left but we'll let go of it okay all you have to do control the command C get control a command we now we have this object over here also what you could have done is dragged the whole of this image and you know paste it here then you would have just selected this and just like that and created a mask that's also something you can do but it's good to have a you know object kind of thing we don't want to carry extra baggages to you but here's the thing when you're copying something like face hair important stuff then you might want to copy it along with the mask the mask way because that way if you lose something extra if you erase something by accident you always have the option to get it back by using masks okay but in this case we don't have much so that's it's okay to do that wait okay so let's place the ball somewhere around here okay that's looking pretty good now you know what this stupid vase is kind of distracting so let's get rid of that so select the background layer make a copy of the background layer first whenever you're doing something like healing or changing stuff removing stuff make a copy of the background layer right that way you have the option to go back that way you have the option to see whether it's looking good.

If you have any doubts, Please let me know :)