I think you did a good job with these sprites. They all look beautiful and you stayed true to the original look of the low res sprites. Excellent!
If you know your way with 3D programs, please consider doing a real 3D plugin for sprites. We had one in the works 4 years ago for the water set. The ceilings lamps were a sight to behold when they were in 3D. All puddles also looked very good on flat 3d planes.
This plugin replaces most of the original Jjarro props with 4x resolution rendered versions.
-The sun sprite is not replaced yet, but I have no idea where it shows up anyway.
-The broken light fixtures are not replaced either, as the game doesn't let you break Jjarro lights.