You're making me blush !!!

Michelle	Designers, how are booth design going ?
Renee	Oh, Michelle ! Don't call me a designer. You're making me blush.
Dan	But I like that title. You can call me a designer, Michelle.
Michelle	Haha. OK, joking aside, how are the things going ?
Renee	We've designed the booth in three sizes because we're not sure how large our space will be. Here you are.
Michelle	These are excellent. You two must have put a lot of thoughts into this.
Dan	Actually, we went online and collected lots of fair related materials. We also referred to some photos of previous exhibitions on the computer.

Explanation :

Blush - To become pink in the face, usually from embarrassment

Example : I always blush when I speak in public.