ok, as i play enhancment shaman quite long, i'll add something from me. ^^
first: talent tree
You don't need Toughness if you don't plan to go PvP, in most fights movement debuff reduction wont affect your DPS. Also I myself do not find Improved Stormstrike necessary - with right used Shamanistic Rage you can fully restore your mana nearly anytime. If you put points into Static Shock - Improved Shields is a must! Yet you havent give a single point to this... If you keep Stormstrike debuff on target each hit from shield with this talent will add 38% instead of 20% from stormstrike alone (strmstrike +% and imp.sh. +% stacks!). Its always some extra dmg - especially if you put points into unnecessary talents other way.
Second: Glyphs
As other stated above, your choice isn't very well. But there are many gyph builds worth consideration. I'll mention only some, that hasn't been stated yet (Glyph of Feral Spirit is absolutely a must!!):
Glyph of Shocking - you can use your Earth Shock 16,6% more often - which reduces 'non skill' moments during rotation.
Glyph of Lighting Shield - it gives additional 20% to dmg made by shield, with other talents mentioned before it will increase damage made by your shcking by total 65,6%!