I trie my best to make scratch. Sadly you can't change things inside of blank spaces like numbers or so. ALWAYS put "stop this script" block at the end of a script. NEVER leave a blank space between When Flag Clicked and the other blocks. It may work but might end up in unsolvable error. If you don't want some blocks put them aside. (Unless you want a delay.)
New blocks: Stop this script (Stops the running script) New updates: attaching blocks. But it's hard to fix sometimes. Only works for the when flag clicked. But it attaches well