Hey there! Not sure what custom blocks are or how they can be used? Then go through this introduction to custom blocks! Press space to go to the next slide in the project. If you need any further help, feel free to leave a comment below and we'll try to help you out! :) If you'd like to familiarize yourself a bit more with custom blocks, take a look at this wonderful fix-it project: https://scratch.mit.edu/projects/72727950/ Remember you can always check out the other submitted projects in the SDS studio and click 'See Inside' to see what other people have created using custom blocks and learn how they can be used. Link to SDS studio: https://scratch.mit.edu/studios/1445560/ Tutorial created by @Unrealisation