“Handwritten” commercial flooring direct mail flyer

This direct mail flyer is full of attention-getting features:
1.) It looks “handwritten”
2.) It “highlights” the offer with lines.
3.) It “highlights” the offer with actual highlighting.
4.) It gives the first 100 customers a free Roomba Vacuum.

My recommendation on how to make this flyer better would be to include some example work pictures they’ve done on the back. Currently the back of the flyer just looks like this: