Well done on finishing a game for this jam! The premise of the game is quite fun, however I struggled quite a bit with the controls. I did eventually get the hang of it, but that point I was much more interested in blowing everything up, then building a high tower. I ended up putting a gigantic skyscraper onto a tiny shop, absolutely destroying it.
Picking things up was a bitt finnicky at times, counterintuitively you dont really aim at the ground for the big things, but more at the center of the building. The score also continues going up even if you havent placed it down yet, so the score keep being much higher then where the building it once you have actually dropped it. Neat game though, and I hope you have had a great time making it!