What are some good mods for skyrim to make it look better?
Check RealVision ENB.
+1
Randy Savage Dragon Mod and Dr. Zoidberg crab mod.
climates of tamriel, realistic lighting overhaul, realvision ENB, 2k textures, and all of these are found on the skyrim nexus.
I second Climates of Tamriel and Realistic Lighting Overhaul. The two of these alone give a huge boost to visual and even audio immersion. I can't recommend any particular ENB, but there are a lot of flavors out there.