Layering? Just go to Data => Layers, set the screen you want to use (upper number is "map", bottom number is the screen). Then the bottom bar's Layer section gets a new layer tickable. Tick it, and now everything you place on the screen will be placed on the layer. Why is it good?
1. Transparent colour gets 100% transparent
2. Ticking the "transparent" box makes the whole layer see-through
3. You can place multiple things on the same place
4. You can place things above Link's head, even above flying enemies (Layers 1 and 2 are below Link and push flagged combos, but above Layer 0. Layers 3 and 4 are above Link's head but below "overhead" combos and flying enemies. Layers 5 and 6 are absolute.)
I really don't think you could make a big quest without these features...
![icon_shrug.gif](http://www.purezc.com/forums/public/style_emoticons/default/icon_shrug.gif)
As for tilesets... err, were you using Classic for these character sprites?
![icon_eek.gif](http://www.purezc.com/forums/public/style_emoticons/default/icon_eek.gif)
If you want to learn tilesets, oh well... Play Hero of Dreams for Pure-PTUX knowledge, play Shadows of Dawn for PTUX+ knowledge, play Ballad of a Bloodline for DoR++ knowledge, play Lost Isle for PTUX++ knowledge, play Shadow Knights for GB knowledge.