"这是我亲自设计并制作的" 怎么翻译成英文

This was designed and made by myself.

PS.this is the shortest way to say it and it is more like oral English, or if you want formal English just tell me, but you need to give me some more details about it because it is hard to translate but just knowing a few information, hope this will help you.

this is designed and made by myself

This is what I personally designed and produced