Okay, today I thought I'd share one of my method to make anything look like a stair (basically on tiles uh).
It's easy, fast, free.
For that you will need paint.NET (Basic software,
completely free.)
1)Open paint.NET, and create a new file, and choose it's size (if you're going to work with a single tile, then make that new file 16x16, etc...)
On here I'll work with a 32x32file.
2)Select everything, then use the eraser tool. "Erase everything", and you should see a checkerboard appear. That means your background is now transparent. It's what will make you able to draw an alpha line.
3)Now select the tool "line/curve", select black color as first color and set the color's alpha to 140 (140-150 is alright)
--->

4)Select the size of the line on top to 6. That should be enough to make quite tiny stairs for graalians feets.
--->

5)Draw your line and make sure the beginning and ending vertical pixels are brighter than the middle part (for a better illusion).
--->

6)Finaly open the tile you want to work with in paint.NET ! Here's the tile I'm working with (32x32)
--->

7)Select everything in your "line" file, then copy (press ctrl+c)
8)Go back to the tiles and do Edit->Past as
new layer
9)Place correctly your line (wherever you want anyway)
10) Here's the result ! Now you can play with your new stair-styled tile !
I know it's not the best way to do this, but it's a very easy thing to do even for beginners and you can learn how to play with layers this way.
It's sure not pixelart, but might come handy sometimes.
--->
Illusion !
