The map suffers from some major balance concerns. First of which is a lack of a Tavern and Goblin Merchant. These structures offer some important choices for players, like the usage of tavern heroes and items like boots and scrolls of healing, that are essential in certain match-ups. Furthermore the pathing and layout of the map, while allowing for multiple ways to the enemy base, is too narrow. There is hardly any open spaces, that would allow for big fights, and reduces manuverbility and improves blocking alot, favouring ranged units. Furthermore creep locations are misplaced, allowing no straight right click and forget path to the enemy. Scouts and rallying units will aggro creeps when trying to reinforce your army or scout the map. Additonally an inbase extra goldmine, guarded by very weak units is under no cirumstance a good idea, as this would be heavily exploitable. The base also only have 1 entrance that would easily be blocked off, allowing even more easy defense and exploitage of this goldmine. There also seems to be an excessive amounts of gold mines in general on the map. There is a lacking amount of trees compared to the many gold mines on the map, and you will quickly run out of wood. The items drops is semi decent, and in the correct level range, in most locations. There are some though, that could use an ilvl increase of 1. Additionally the terrain leaves something to be desired. While there is a fair amount of tile variation, there is a major lackage of doodads in the jungle areas, and certain creeps like the reef elementals in the middle of the jungle makes little sense. Also the creeps overall are too powerful for a 1v1 map, as there are too many red camps, and a lacking amount of orange camps. Overall this map is of poor quality and would need some major changes to be considered approvable. I'd suggest you add a tavern, some goblin merchants, rework to base to have 2 entrances, make sure you won't aggro creep camps by trying to get to maunver around the map, replace many of the red camps with orange camps instead, remove the inbase goldmine, add some more trees, and make some more jungle detail, like shrubbery, plants, rocks, and things of the sort. Also i'd suggest you add some critters, as these allow for easy corpses for undeads to use their rods of necromancy on.
I'd suggest you read my guide on how to make a competetive melee map, for some guidelines on what you can do to make your map more balanced: http://www.hiveworkshop.com/forums/general-mapping-tutorials-278/competitive-melee-map-252987/