Sorry for the late reply, it's a good start if this is a 24 pdr gun.
the overal length of the gun is 353cm so 4,9cm in 1/72 scale.
the volée seems short, it should be 175cm so 2,4 cm in 1/72
Moldings are too thick and are not simple rings (see below)
The trunnions should have reinforces and be a little bit lower, see the cut below and the photo
I could seems always unsatisfied but I admire your work and just want to improve with what I can provide, these are not bad commentaries, at all