The art and presentation is good! I just think it's lacking something.
For the high score, you should have had a persistent value, so every tap posts 1 to an incremental scoreboard. That way, you could retrieve that same value when the user plays again. I did a thousand then backed out to check the scoreboard, but when I hopped back in I started back at 0.
Also, it's literally just a clicker. I don't understand the diff between the sandwich and pico head, I tapped both of them a few hundred times. There's no auto click or idle features to make the game replayable at all, the scoreboard and 69k medal belong to the people with clicker software and the most patience.
So basically: cute and pointless, with some technical issues and a lack of variety.
I REEEALLY wanna see those piconjo emotes in the forum though, send em to Tom or something :)