You asked for feedback, so I will give some. For a first game, this isn't bad at all! It has a clear goal, it introduces a new character, Lozo, that you could bring back for a future game, and you've learned how drag/drop, buttons and text works. All skills that can be used for future jams. For improvement, I think the first thing I'd add to it would be some sound effects - picking up an item, dropping an item and a click sound for when you push the button. I recommend ChipTone or jsfxr for sound effects and Incompetech for music (or BeepBox to make your own music).