Welcome to the forums!

:wave:
Your English budgie is just stunning! He's precious. What's his name?
To answer your questions, I agree with Aluz. English budgies have naturally more fluffy feathers and it can be difficult to see their eyes, making them look smaller. Some budgies look like they can't see at all!
Also, if he has actual "bald patches" he could be plucking himself due to stress or another condition. However, if you haven't actually seen him "pulling out" any feathers and he just looks sort of patchy, then it's likely a moult

I can't wait to see you and your gorgeous boy around the forums
Feel free to ask about anything you're unsure of, we'd be happy to help!