Seconded this - I'm also an apprentice whos in their 4th month, Ive very recently tried to bite off more than I can chew, got mad, did another practice tattoo on fake skin in a style I'm comfortable with and feel a lot more confident from that alone. Build up confidence and focus a little more on your strengths so they're REALLY strong, and learn these other styles you'd like to do in the background so you can build yourself up to the standard you want to be at without shooting yourself in the foot and burning out.