I've thought up some earth spells!!!!!! I lied. They are sand spells (as sand compacts quite well to form strong masses, and at the same time is extremely malleable).
Sand Armor: coat the body in a thin layer of sand to dampen blows. Act is concious effort.
Sand Shield: a sphere-ish of sand that moves around the body blocking blows. Act is unconcious, happens always. Prevents damage. Can be punctured by strong enough blows or circumvented by fast enough attacks.
Sand Hold: (from now on assume "Sand" before everything else) Grab hold of a target and encase them in sand. Sand can then be used to cover the face (causing suffocation), or can be forced into the victim via nostrils/throat/etc... Act is concious effort.
Crush: Used after Hold. Implode victim. Act is concious effort. Instant death to target of too low strength/defense (however it'll be broken down).
Barrier: Complete physical barrier of sand encasing caster. Ethereal eye is created to allow vision. Act is concious. Damn near impenetrable shield. Can be sustained as long as caster has energy or (after no energy) succeeds a saving roll (critical roll? I don't know what you're calling it). Can be penetrated by extreme force only. Surface can be altered to create large spikes, protrusions, etc... for short range (counter)attacks (effective 7m). Caster's energy set to 0 after use.
Wall: Large wall of sand. Blocks area damage from one direction over 3 or 4 m. Act is concious.
Arrows: Arrows created from dense sand and shot through the air at high speed. Long range. Act is concious.
Desert: Create MORE sand by crushing rock/dirt deep underground with preexisting sand. (very handy). Act is concious, requires little energy, and is fairly fast (a few turns!).
Just to note, I'm assuming here that the sand is reusable at same strength, and cannot be destroyed without a fire technique. Water techniques would slow the sand, however, but it could be dried up by breaking it apart and moving it around a little. It is also assumed that the user has complete control of the sand (ie, can make it fly around), and does not require it to touch anything.