How can I make an effect like this:
When the objects starts moving, you can see its glowing from the back
A lot of games use this effect
I know the image and description is not good and I hope you get what I'm looking for.
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just spawn a clone of the same image/another sprite with same image as original or any color you want it to be, when your main actor it starts moving or is moving, to the new spawned object add the fade behavior and set it to fade in 0 wait 0 fade out 0.2 or less/more depending on your desired effect. is the easiest way of doing it.
I call it a trailer or tail and there are a few ways to do it.
You can add a particles effect to your layout and create the effect and call it when the player is moving.
You can find lots of tutorials on particle effects.