Hmm... OK.
1. Open up the Block Editor in Advance Map, on the map that has the tilesets you want to edit
2. Choose a pallette that is nearest to what colours you want.
3. Go to Picture - Save Tileset 1 or 2 (1 is the main tileset, 2 is the secondary, unique to certain maps tileset).
4. Open up the Tileset you saved.
5. Open up your tiles you wish to insert, and copy and paste into the Tileset.
6. Carefully recolour the new tiles to fit the Tileset, Remember: The background colour is invisible!
7. Save your work
8. In Block Editor, Go to Picture - Load Tileset 1 or 2.
9. Assign your tiles into the blocks (which are used as tiles in maps!)
10. This is optional. You can change the pallettes by using the Pallette Editor in Bolck Editor. (Pallette - Pallette Editor). Select the pallette you wish to change. Remember, to save all Pallette Changes, you need to go to Pallette - Save Pallette Changes in Block Editor.
There are better tuts, but this is how I do it.
1. Open up the Block Editor in Advance Map, on the map that has the tilesets you want to edit
2. Choose a pallette that is nearest to what colours you want.
3. Go to Picture - Save Tileset 1 or 2 (1 is the main tileset, 2 is the secondary, unique to certain maps tileset).
4. Open up the Tileset you saved.
5. Open up your tiles you wish to insert, and copy and paste into the Tileset.
6. Carefully recolour the new tiles to fit the Tileset, Remember: The background colour is invisible!
7. Save your work
8. In Block Editor, Go to Picture - Load Tileset 1 or 2.
9. Assign your tiles into the blocks (which are used as tiles in maps!)
10. This is optional. You can change the pallettes by using the Pallette Editor in Bolck Editor. (Pallette - Pallette Editor). Select the pallette you wish to change. Remember, to save all Pallette Changes, you need to go to Pallette - Save Pallette Changes in Block Editor.
There are better tuts, but this is how I do it.