Great game for your first ever project! Couldn't find any bugs (apart from the ones you eat!) and the audio matched what was happening on screen relatively well, though the sound effects were a little too loud.
I wasn't exactly sure why I was a frog, and why a diamond turned me into a dragon, but eating bugs made sense!
Try adding some text at the start of the game to tell the player what they have to do and why so that they're ready to go rather than having to work it out themselves :)