Haha thank you, I don't think I'm an expert but I'll do my best :)
I think it would be the visuals for me, your game would really benefit from a more cohesive artstyle between the different elements. I think the splatter should maybe be a single colour, and you could still show the elements that are behind the splatter (I'm not sure how that would look, you would have to experiment).
Since the transition is the tomato getting big, you should make sure the sprite is big enough so that it doesn't look pixelated. Maybe some bug fixing (the character still shows during the transition), maybe a tutorial level just to make sure the player understands the concept from the beginning. Also, the earlyer spots dissapear when there a too many, and that is quite frustrating !
These are just some ideas, hope this helps!