A free app for Android, by Bikaba Apps.
This application is the best tool for converting your photos and texts into pixel art made of blocks. It is very easy to use and works in the same way as it does on the computer.
All you have to do is select a photo file from your device and then set options before conversion. After that, you can start the conversion process. It is recommended to watch the tutorial video to get instructions on how to use this app.
The app will generate a behavior pack and then you can install it on MCPE. If you want to build block art towards the east, please type the following command in your Minecraft world:
Towards the east: /function build.east
Towards the west: /function build.north
The app will generate a behavior pack and then you can install it on MCPE.