Welcome to the forum, and that is a great looking razor.

I would only echo what has been said before, no pressure, tight skin and slick lather are the key. My first shaves were comfortable enough but just not close. That only came when I reduced the pressure.

As for the size of the razor, you are learning a new skill so you don't really have the comparison of anything else. So go for it, take your time, don't get discouraged by the first few shaves and enjoy yourself.