First:

Open the image that you want to render:

I used this cute boyish girl for my tutorial today. LOL

If the image that you want to render doesn’t have complicated background just like mine, just simply use the ‘magic wand’ or fuzzy select tool:

A/N: Ignore the ugly cropping style. -_-

Select the area that you want to delete. Something like moving ants will come out (LOL Moving ants?):

Go to Layer > Transparency > Add alpha channel. Nothing’s different? Delete the area. Checkerboard thingy will show up:

Select other area and just simply delete it. Well, mine looked horrible, seriously. -_-

How to make it flawless? Well, just zoom in the pic and erase the area that you dislike. And yes, it takes time. After rendering and erasing:

Save or export it as PNG format and not JPG format.

Second:

For the complicated background just like this:

Use the ‘Free select tool’ and put it around the character:

Zoom in if needed. And yes, it takes time too.

After select your ulzzang, do not delete first! Go to Select > Invert and then you can delete the useless background. LOL:

But wait, you still have these:

Just do the same and delete it. No need to invert it or something worse will happen. O_O

You don’t want to mess your render right?

Save or export it as PNG format and not JPG format.

Tips: Basically, renders or PNGs are usually used in cute or romcom poster. But, you also can use it in angst, romance, horror, or any kind of mood as you wish. It depends on your creativeness. This is the example that I used render for romance (?) poster:

Well, good luck!