very nice work！very usefull work！ do you use one tilemap to make iso map ？
In a way, yes, but no exactly.
For each scene/room/level, I use one large 'ground' sprite (technically not a Tilemap), and one 'element' sprite.
The 'element' sprite is composed of multiple animation named after their object name in Tiled Map Editor. So, technically, I use 2 sprite objects per each level.