it's hard to do it "wrong" ... and that's going to be a bit of a subjective thing anyway..
you fortified the base in opposite direction -- that's good.
what i'd do differently is try to shape a bend below lowest axillary growth / buds (future or current branches)... anythign below the bend will suffer greatly or maybe more accurate to say it won't benefit like all the axillary buds below apical bud (top of main trunk) but above bend.
what this does is impact distribution of resources in the plant.. "Apical dominance..." the highest growth tip will take the largest share of resources. So you bend it over and even it out so that growth evens out. More 'training' will be necessary but this is the gist.
further impact growth by temporarily tying down or lower in any way the tallest growth... remove restraint once the other branches catch up... rinse and repeat as it grows to keep canopy nice and even.
topping will also cause a temporary slow down up top and more growth down below.. don't be afriad to mix both techniques as needed to fill your space in a systematic and efficient way (saves time and money, if you put some thought into it).
to help form a better initial bend, try to soften it up in 2-3 places - don't crush, don't damage vascular tissue. bend in 2-3 points close together and slowly form a near 90-degree bend. remove anything that will clearly rest on the substrate as that's not healthy. bend between the axillary growth or favor 1 sidde and prune off he side facing down. it realyl dooesn't matter much. You'll probably have to thin out some spots regardless.
try to keep branching even across canopy -- as in don't have 1 primary shoot from trunk feeding significantly more colas than other primary shoots... you can but the one feeding more will produce smaller colas in that section -- you can juddge size of vascular tissue as that is not a 1:1 guaranateed result. thicker means more water and resources capable of flowing throught that portin of plant, right? it's not uniform all over but doing LST and topping as needed in a systematic and well-distrubuted way will result in very similar thickness of vascular tissue all over relative to height.