I am making available in this topic several tutorials that I created that teach how to create themes customized for 3DS. Tutorials available: Essential Tutorials Definitive tutorial on how to create theme with single image with the same background effects of the official themes of Nintendo Note: This tutorial also serves to create themes with different images. Definitive tutorial on how to create border textures with the same quality as the official Nintendo themes Definitive tutorial on how to create folder textures with the same quality as the official Nintendo themes Definitive tutorial on how to create SFX and bgm files Editable folder and border files, which allow you to create icons with the same quality of official theme icons. News Definitive tutorial on how to create custom themes with rolling screens on both screens. Under construction Secondary Tutorials How to create previews with bigger icons to post on 3dsthem.es. NEWS Tutorial on how to create previews for your themes posted in gbatemp. How to create border textures with drill effects. Under construction How to create folders and border of Zelda game using Photoshop. Under construction How to create border with neon effect. Under construction How to create folder with neon effect. Under construction Programs needed to create custom themes: Usagi - Program to create customized themes, and the best program for creating and editing customized themes. Yata Plus - Program to create custom themes, I recommend you download the Usagi editor. Audacity modified version - Program to convert files in WAV and Cwav formats. ctr_waveconverter32 - This plugin has the same function as the modified version of Audacity, it converts Wav files to cwav, this plugin can be integrated with Usagi. LoopingAudioConverter - Program to convert WAV files to brctm. Howling Theme Tool - This program converts custom themes to .cia format. Definitive tutorial on how to create Themes in cia format, tutorial created by Mizumi on Youtube. Definitive tutorial on how to use Usagi, created by XZize on YouTube. To use Yata plus or Usagi you need to have the following items: Net Framework 4.5 Windows Operating System Official topic of the Usagi Editor Official topic of the Yata Plus Editor Official topic of posting of customized themes gives gbatemp. 3DSTHEM site to send and download customized themes. You ask me, after reading these tutorials I will be able to create what types of themes. I leave below some examples of custom themes that I created using the methods explained in the tutorials.