Thanks guys for the tips, and I'll work on soften those edges (: --- mm, these ugly edges are caused from "Selection" in Photoshop --- anymore critics and tips are welcomed
Customize > Customize User Interface > Keyboard tab, under "Group" set it to Editable Poly, and set a hotkey for "Select Edge Loop" and "Select Edge Ring.
Either one-by-one in pairs, or shift-drag the edges of both sides of the polygon to make nev faces on each side, delete the polygon and bridge the edges:
I can see the edge loops on my end, barley though. Have you tried changing the colour of the background and/or the edges colour in Options> Preferences?