I want to show a picture on a map but that doesn't covers the player, but when I test it, the picture covers the player. If someone knows how do I can make the picture having less Z than the player, post here.

A thing you can do is to reserve a special picture number (let's say 50) and modify slightly the Sprite_Picture script section. Search for self.z = @picture.number and replace it by this:

Or you can just change the opacity of the picture to make it more transparent to see the character

Thank you!

Or you can mess around with X and Y coordinates until you get it into a corner in the screen. For pictures such as health bars (mini-games), hotkey icons, and and mini-maps...I prefer them non intrustive and small, and they usually look well in a corner of the screen such as the top left screen or the bottom left.