Can’t Get rid of Theme author’s name in Devart 1.0.1

I am using the theme Devart 1.0.1 for my new blog. On the top of the right side bar, there is photo of an apple and the sentence: “Hello, My name is Denis and this is my blog.” Well, I am not Denis, and I really need to change that, and also change the photo if possible at all. Any help would be appreciated.

Thanks!