the first thing he should learn is proper resizing, best to work on very high images and resolutions (click the word STARTED in my signature for some samples of size) you need a general idea of what you want to do, gather resources.
If i see it right there is also some blurry shit there, which makes for trash pixels. If i am not mistaken he used kotonoha, (she is used goods anyways) but the render seems pretty weak. Coloring is bad, this kind of hue/saturation towards gree is bad, it turned all of the signature image green while photoshop allows for saving layer, which makes only teh selected layer affected by changes (adjustments and stuff). Also, greed doesn't go well with Kotonoha, Sky Blue mixed with autumn red/orange would make a great work if he used a proper background and elements. That font does not fit Kotonoha, I would use
comic sans serif, mordor, my bleeding scars, Monotype Corsiva.
And please, do not use nice boat ...
wall text is wall text, sorry.