Pls help with designer's english domain name

[piotrsierant]

Hello,
my name is Piotr Sierant, I am a graphic designer from Poland, working as a freelance designer for 10 years now and ready to go international and make new website in english..

My polish domain name is panpiotr.pl - Pan Piotr simply means Mr. Peter - and it worked, easy to remember, short. I have also domain panpiotr.com but the word "panpiotr" sounds too weird in english because nobody knows that "pan" means "mr." or "sir".

I would like to ask people whe live in english speaking country for help. I would be very grateful for the advice from You

Should I go for MrPiotr.com? or PiotrDesigner.com? Someone said that MrSierant (my last name) sounds luxury because it sounds French.
What do You think? What domain name would be best sounding, easy to memorize and spell? Maybe SirPiotr.com ? What is actually difference between Mr and Sir?

As you may know domains like peterdesigner.com etc. are already taken