Yeah, the toon-shaded version look a lot better, can you apply the toon shader to the UV'd version? If you're required to use normal maps, but didn't learn to sculpt and bake yet, then you can try adding detail to your normal map with photoshop plugins like the nvidia normal map plugin and so on.
This is just an assignment for my 1st year of 3d art at university. I was required to add all the different texture maps. The 4k was I was work at, never lowered them afterwards. I dont know how to use anything like z brush yet to do a high poly bake. Poly count is about 11k. clothing, character and hair are different…