Manure prepping for next year

[Lowlander]

We recieved a pickup truck load of llama manure from a farm down the road. The garden is 25'x80' so it is far from coating every square inch of the soil.

besides adding this and letting it over-winter, what else can we do to build better soil for next spring?? can we or should be add lime now instead of in the spring??

any other suggestions to build better soil over the winter?? I already place all the leaves from the yard in the garden and till them in every fall.