I have worked with letters "P's" of Past and Present. The first "P" (Past) it is flipped to give the idea of Past (in timeline: something that already happen) and the second "P" of present with the right orientation.
In Entry #38 I worked with the window cover and mixed with both P's. In the center, because the mix of the P's it is formed a heart shape, that I used in the Slogan this heart-shapped-butterflies.
In Entry #44 I design a present box with a ribbon on the top, the P of Past in the left darker side to give that sense, and in the right face of the present it is the front of the "Past & Present" shop.
I will be glad to hear your ideas and changes.
Hope you love them as I am and I will keep working in more ideas...