Hi Aternos Team 
Can you please add the following Plugin ?
Name: Sketchmap
Tutorial:
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Link: https://www.spigotmc.org/resources/sketchmap.5601/
Description: SketchMap is a plugin designed to allow players to put images from the web onto a single or array of maps. These maps can be added to ItemFrames to complete the image and create awesome visual displays in vanilla minecraft.