unity3d - Blender to unity problems -

i have few problems importing character blender unity. first of these images of character inside unity (idle state) , in blender(how should look).

unity:

blender:

so guess 1 of problems double sided mesh. checked double sided not working how can fix it.

second problem guess weights. looks unity not getting weights how should have have idea problem there.

i trying avoid 3d modeling since have done game considering engine, had start learning blender , not laugh because second character (first 1 blank white mesh) :p.

the solution 1 sided duplicate object , scale little down. problem edges figure out later.

for second 1 bone weights problem, imported .blend file unity , worked (since importing .fbx)

beter solution second one: add solidify , it's thickness property job.