When working on a profile, it is often difficult to figure out how to transfer a 2d sprite to 3d, if you know the shape, but don't know how to translate it to 3d. Here are some ideas that might help

Vines: Do Half V-Cylinders, and combine vines that are touching.

Characters: For character sprites, If you want a quick and dirty version, tall lanky characters can use V-Cylinders and wide fat characters can use H-Cylinders. If you see specific sides of the sprite you want wider that the other half, use Half-V/H-Cylinders.

Water: Water may seem self explanatory, But I have found two nice ways of doing it. 

1. Make the water .5 transparency.

2. Set water to 2nd Layer, Put size at 16 z and have the offset at 6 z

Separate Shaped Parts: Lets say you have a sprite that is half H-Cylinder and half  V-Cylinder. You can duplicate the sprite, erase the part that faces a different direction, and set the two parts in the same place having different shapes. They can Both have different textures and Shapes and the changes apply to every similar sprite, so you don't have to worry about doing the same thing for every one. Can be helpful for games with backgrounds in which you don't want a hole in the background, but want a tile in the foreground.

Character Tiles: some characters may be composed of multiple subsprites and you might have to check things in both directions. Peach, Mario, and Luigi had their eyes as separate sprites. The eyes had to be edited for each character's face, so that required some trial and error work on fixing that.

Frame Rate: If you want to increase Frame Rate Combine as many Similar Tiles as Possible