It's a little hard to have a clear idea without a better idea of the space, but I'd think a wall would be the least visually weird option.

@Roy Assaf ,All marketer marketing and hype aside.....1 Absolutely agree with @Michael Quarles  that yellows are the wrong approach for multifam....especially in Brooklyn. 2 Sample size is small, but to get ZERO calls, not even a "go to hell" or "I'm gonna shoot you in the head"....there's definitely something wrong.I assume you've checked all the basics, actually visually inspected your RTS to make sure everything is printed properly and phone number legible?

You will probably hear more than you could possibly find out by visual inspection from things like what’s buried in the backyard to the fence being propped up by sticks.4.

The thing is, a printer-applied address is a dead give-away that yours is a direct mail piece because the print lays flat on the paper, unlike when you hand-write an address, which gives visual texture.I think too much is made of using yellow legal pad paper. 

ciao Hey  April, 1. all of my free professional time is spent researching, working, educating myself on REI. about 20-25 hours. 2. we are using a handwritten style note on white paper with some kind of corporate branding , check out openlettermarketing .com. for visual examples.

You need to put a lot of emotion around your WHY and visualize what life will be like for you both, your family, your legacy, etc. 

I ran the numbers and made a very easy visual presentation, all of which were options that worked for me.

Focus on the visual but make sure the copy is clear, concise, engaging, and has a clear call to action.

Visual Basic?

@Sherief ElbassuoniThank you - love the visual!