Changes to jpeg ebook cover

I have a jpeg for an e-book cover that needs the font changed on the headline and subheadline to make it more legible and the size increased. No other design work changes. I do not have the original files that created the jpeg. I will need two sizes. It's a rush that will need to be completed by Monday, May 12th EST, US time of 10 a.m. ## Deliverables 1)New jpeg by Monday, May 12th US EST 10 a.m. in two sizes. jpeg is attached. ## Platform n/a