@PlatinumSkinkWell, I wanted to simulate a full 'round' of battle, true to Fire Emblem style. (One round on the Player Phase, another on the Enemy Phase, etc.) If you'd rather I not, then I won't, simple as that.
As for the map, thank you! Most of what I did was collecting the proper sprites and maps from various sprite sheets on the internet. In particular, I have a big image file of all the class sprites in FE8, plus two other copies in neutral and enemy palettes. The program I used was an older version of Paint.NET; the recolor, layering and magic wand functions were very easing on the work. Funny story is, I didn't actually use a physical grid! Rather, I sort of mapped out the grid mentally when placing units; considering that the map is constructed from tiles, I used the placement of some of these tiles for reference.
I'd say the only real tricky and time-consuming part was remodeling Ret on the fly to better fit in FE8's sprite style. One other part that threw me for a loop was that you didn't use FE8's Beserker sprite - you used FE7's, so I had to go find sprites for that, too. It was hard to figure out special sprites for the swordmasters. On units like Nero and Rioga, I used their 'selected' sprites, which commonly have more detail and flair. The swordmaster's 'selected' sprite is just him pointing his sword up - which I didn't think fit well within the map's 'grid'. I had a similar problem with Sion, but went along with it anyway even though it was definitely pushing it in terms of sprite constraints on the map.
If I were to do this later on, I would probably stitch together custom sprites for Garric and Sion to label them as key units while still giving them that flair. Another feature I'm considering is using each class's movement sprites to indicate whichever direction they are are facing or moving to.
The best part, however, is that with Paint.NET's layers, I can save a file that I can easily edit later on; the only really intensive part is laying out the map for the first time. If you like, I could help serve as a mapmaker.
...Also, I just noticed that Garric did, indeed, not have a marker on him. Ah, well- next time!