Although frankly I could not tell at first. First panel, sure, booksigning, must be His Lordship. Second panel, though? Why is Elly signing Mike's book?
April tries in vain to get someone to say something nice about her in the third panel. Having personally endured low self-esteem, I can speak from firsthand experience about putting on a massive ego to compensate for it. (See also: My username.) It doesn't work all that well, but if you do it right, then it's funny and people will like you for that.
But alas, poor April, not even humorous overego will get anyone to pay attention to you. Nor will it work as a clever way of holding up a mirror to Mike's own ego. It will go unnoticed, except for by the woman in the fourth panel who has spontaneously appeared to vomit on Mike (the not-so-secret desire of all of us, I believe).
I am really going to have a hard time if this is a week of Mike.