Your plant looks good, brother. What are you about 3 or 4 weeks into flowering? Looks nice!
Your leaves are dying off, as the plant matures. It may be lacking a bit in nutes or nitrogen, but it looks to be flowering well.
What kind of nutes are you giving her? if your confident in your nutes, than just go get yourself some bloodmeal.(Nitrogen Supplement) You can get it at most Wal-Marts and garden supply stores.
Good luck, man!