Hey, native/proficient speakers of English!

My Googling didn´t work, so I would be glad if you could offer a few synonyms and/or Turkish translations for "steady hands" in this context:

Letterer: The letterer must understand and execute both built-up and calligraphic letter forms and be able to design new lettering. Knowledge of the history of lettering is necessary. In most instances, the letterer would work on a free-lance basis for advertising agencies, promotion departments, and package designers. With the increasing use of photo- graphic typesetting, the need for letterers who can also design type is increasing. Absolute precision, expert draftsmanship, and a highly refined sense of proportion, letter spacing, and the interrelationships of words and letters are required. This job demands precision and very steady hands.

"titremeyen eller" is what it means, but it doesn´t sound perfect though.  May be yiu can also use sabit or kontrollü eller.

çok teşekkürler.

thanks a lot.

I get it now.

Şimdi anlıyorum.