People are apparently under the impression that reblogging someone’s art and adding a comment is frowned upon and that can’t possibly be true, every artist I know of sees a positive comment on a reblog as like the ultimate reward for their hard work.
Obviously don’t feel bad for NOT adding a comment if you’re shy or just don’t know what to say, but if there’s something you would like to say about a drawing you’ve liked enough to reblog, I’m pretty sure most artists crave hearing it.