Does Merino Wool Shrink How To Shrink A "dry Clean Only" Shirt?

How to shrink a "dry clean only" shirt? - does merino wool shrink

I have a new shirt is clean and dry (I do not know when you bought it online), I will, but it must be a little reduced. It is 70% rayon and 30% merino wool. I heard the washing and drying is the normal one point reduced to dry clean only, but I want to shrink a little. It was a cheap shirt and I will not take him to the cleaners or something, help!