Eli,
I actually misunderstood your opening question. As I understand it, You are looking to get a tree 40 inches high, with many lower horizontal or near horizontal branches.
The procedure would be similar except that
You would pinch the apical tip starting low. It will branch and grow a new dominant tip which will be trained as the main trunk.
You would perform the pinching routine at every 6 to 12 inches or wherever you need to form branches until you were at 40 inches.
At which point you would prune the apical tip and keep it pruned..
To maintain the shape, the apical tips of branches will have to be pruned continuously. If it is an aggressive grower, a lot of pruning will have to be done to maintain the small size. It will be a "large Bonsai" fig tree and can be maintained with aggressive root pruning. Most healthy fig trees if grown in a warmer zone in a container will need a lot of root and limb pruning to maintain that small size, IMO.
In this picture the main stem (leader) was pinched, the top 1 inch was remove, notice the branching (5 new) below the pinch. The top most branch can be trained as the main stem (leader) if I was looking to grow a taller tree...The branches below the top most one would have to be trained horizontal or at least at 45 degrees to allow the topmost to become the dominant apical tip (become the highest point or leader). The plant in the white bucket in the background is an example of pinching resulting in a "palm tree" growth. These plants will have their tops air layered...The remaining main stems will be Step#1 in the Espalier training process.

The Fig Espalier method actually uses the genetic traits as a guideline to prune the tree.
1. Breba are produced on 1 year old wood (at the tips of last seasons growth).
2. Limbs older than 1 year are non productive.
2. Main crop is produced on new growth wood.
3. Apical dominance is always maintained by one main limb or trunk (each branch has an apical tip).
The pruning method discards the breba crop in favor of an earlier and more productive main crop.
Prune away last years growth and leave 1 or 2 buds (last seasons nodes) to form the fruiting limbs for the new season.
Pinch the apical tips of vertical branched after a fixed number (5 or 6) of leaves to induce figs.
The only reason that shoots form at the horizontal is that the apical dominant tip has been removed (and with it the hormone that inhibits branching). The tree then puts energy into forming a new apical tip, by producing multiple branches, one of which will eventually become dominant (if its not pruned).
<edit>
The leaves in the picture are not FMD, they are newly emerged after 4 days of rain.