Please do not use non-power-of-2 textures.
Also you should update to the latest development version as you seem to use old textures on your map. A lot of those have already been upgraded in latest master.
power-of-2 textures have x,y resolutions of 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, ... pixel. Ofc. our engine can deal with other resolutions as well, but those get upscaled to the next power-of-2 res first and cause unnecessary scaling artifacts then...
Other than that: Nice work 4 a first try.