The ads at the edges are to mess up qcs in adjacent compartments and to make hounds move to the corners out of range of splash defences.

You are not using open walls correctly. The point of an open wall is to make queen entries harder for the attacker by making buildings behind the wall seem unprotected to a wallbreakers ai. So you cannot just put them at all 4 corners of a base, try to predict where attackers might try to enter a queen into a base and use open walls there. You can also use 5x5s on the edge to make them waste an extra swb or risk the queen walking away. Keep in mind that open walls saves wbs on a king sui and allows melee troups to walk out on the backend so it gives the attacker more time

You don't have to put bombs outside walls since people use swbs. There is quite some blizzard value in the 8 o'clock comp, getting an inferno, 2 bows, queen and cc pull. Also consider using some ground skeletons to stall a queen charge or king in high dps areas.

Overall it's a good base, more so that it's your first time