Welcome to the forum. You'll probably find that your small engine and mechanical experience will be a plus when you start your first motorized bicycle project. Nevertheless there are aspects of this hobby that you might need some help and advice on. That's why wer're here.
Our search feature has pages of discussion and advice that will help and we're always here to answer specific questions.
Good luck and keep us informed on your project.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"