When you are trying to add a person to a picture, you want to make sure that you have a picture of the absent person that matches the photo you want to add them to. For example, if you want to add your best friend to a picture of a group of friends on the beach, don't try to use a picture of her in a Christmas sweater. It won't look right and people will be able to tell that you manipulated the photo.  If you can find a picture where your friend is on a simple or uncomplicated background, that would be ideal. The busier the background, the more work you'll have to do when you erase it later. You want the picture of the person you are adding to be as big or bigger than the one you want to add them to. If you have to enlarge the person you are adding, they will become pixelated and give away your hard work to make them look like they belong in the picture. Also try to match color tone and lighting. If you are all on a beach, try to find one of your friend in the sun. You can manipulate the colors later, but it will be harder for you to work with later. You need to open up the photo of the figure you are cutting out in Photoshop. Pick the lasso tool from your toolbar. It will be the icon that looks like a lassoed rope that is the third icon down from the top of the side toolbar. Start from a place near your figure and, holding down your left mouse key, loop around your figure. Once you get all the way around the person, the lines you drew will become highlight lines, which are dashed, moving lines around the edges you drew. You don't have to be super precise, just make sure you don't accidentally cut off part of their body. The extra background that you grab will be erased later. Now that your figure is highlighted, you need to copy the figure so you can paste it over into the group photo. Click on the Edit menu option at the top of the screen. From the pull down menu, click Copy. Now, you need to open your group photo. Once it is open, click on the picture. Then, go back up to the Edit menu and choose Paste...

How would you rephrase that briefly using Indonesian?
Pilihlah foto yang Anda inginkan. Seleksi subjek. Salin dan rekat badan subjek. Ubah ukuran subjek. Hapus sisa latar belakang. Isolasi subjek.