Impala

A sketch for  I wanted to do the safari ungulate challenge and chose an impala because I think they are very beautiful and graceful animals.  In a bit I will get to complete and color somebody else's sketch, while they do mine.  

I'm really trying to improve my anatomy, so if you see any anatomical mistakes I could pay attention to next time, let me know! 
Reference photo: cdn1.arkive.org/media/0F/0FC18…

I couldn't get this to submit as a PSD, so I saved it as a PNG.  Hopefully those layers work for whoever gets this to complete.  If not, let me know and I'll try another way.  

EDIT:
Hawkfeather5811 received my sketch to complete.  Take a look!