Looks good to me, id make these slight adjustments though.
-Move 2 resource buildings on mid to front of main island(only island with 10 spots).
-Move dps towers on final short island for attacker to mid.☆ You will want all your big guns and shields together on mid never spread out, this kills dragon sooner and reloads tower ammo.
-lvl 1 blue mage at start of ur base or atleast on an island ahead. Also need to stop building mage towers at drain island unless u got some heavy hitting towers there. ☆Lvl 1 blue mage at start allows time for ammo shots to be placed from defenders in case of network delay, it is important to also use this time to look at dragon before u place shots…it definitely matters and can vary where u place shots depending on dragon flying.
-Storm on drain needs to go to short res island as well as another mage and dps tower or a 3rd res building.
-Consider building elemental totem but ONLY if you have the embers for dark and fire flaks first.
-Yes, Amarok is a warrior class and that class boosts tower’s hp that are at perch island by 15%.☆Sorcerer class is only other u need to know tbh and it boosts supershot damage by 15%, ice turrets shield by 25%, and a towers stun duration by .5s(1/2 second).