The Fire Wyrm said:
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Just realized you said RED...
WHY WOULD YOU START AT BLUE? SHE DOES NOT NEED THE MANA BECAUSE SHE DOES NOT HAVE ANY!
I don't personally play Shyvanna, but starting blue is definitely not a bad idea. It still gives you a very useful 20% cdr even if you don't get the mana, and the 20% cdr probably increases your jungle speed more than the little DoT from red buff. You're rarely/never going to be ganking before you've had a chance to get your red buff anyway, and if you get red second as opposed to first you'll have it for more ganks. Starting at your blue also makes it easier to go right across the river and steal the enemy jungler's red since most other junglers start at blue and don't go immediately to red.
Since as I said I don't play Shyvana I'm not going to read through the whole guide, but the items section is pretty bad. I would never even consider buying Infinity Edge, Phantom Dancer, or Malady and I would probably never use Atma's Impaler, Youmou's Ghostblade, or Blade of the Ruined King. Shyvanna is a tank or offtank who does decent damage, but a lot of it through her Burnout. However, crit is a terrible terrible stat to build on her because a) she does a lot of her damage from things other than what can scale with crits (which is only the base damage of your autos without applying your e or malady or w/e) and b) she is a tank or offtank and should rarely be getting more than 1 item that gives only offensive stats, and a single crit item does very little for your dps compared to a Bloodthirster. While she scales on ap her scalings are pretty poor and I would never itemize for ap; not only is Malady giving you as much ap as any other stat, its first passive only works well if you have other ap items (which Shyvana shouldn't) and its second passive only works if most of your damage is magic (which Shyvana's isn't).