Top tips Hai-Etlik. I will have to do a little bit of modifying methinks in order to make the poles physically fit. I had considered this previously, but couldn't get my head around it. Your illustration has proved very helpful.
With regard to making the land fit the map, admittedly, the aim was to make it Earth-esque but easily definable into regions for my various races, hence the mountains placed as they are, Natural borders are easier to visualise than political borders.
I think the mountains argument is a bit of a misnomer though. As a couple of you have said, there are "walls of mountains" where "landmass" continents colide, but equally, The Andes and Sierra Nevada are basically walls of mountians where tectonic plates collide and the landmass crumples (or has crumpled in previous millenia), but this just happens to be along a coast. Case in point, look at the north of Canada, there is currently no reason for the large mountain range that is there to exist, however, these plates have been moving for millions of years, and have had many different formations, allowing mountain ranges and fells to be formed in the strangest places (Lake District, UK, for example).
Additionally, Mars has no plate tectonics, yet it has mountains due to huge volcanic activity in the past, creating individual mountains of up to 310 miles across. (Olympus Mons). Venus again has no plate tectonics, yet look at this huge list of mountains: http://en.wikipedia.org/wiki/List_of_montes_on_Venus.
I do agree though that for a more natural look, I should "shape" the continents slightly if only for aesthetics, but this is a fantasy story, and although I do want the continents to look and feel natural, one of my plot items is for an island to be created from the sea by a "goddess" in a later stage of the story, so there is an element of "mysticism" about it too.
Don't get me wrong though, I'm taking everything onboard from everyone who has offered their help, you guys are a lot better than me at this and I hope to learn plenty from you.
[EDIT]: There is a theory that Venus did have tectonic movement at some point in the past, but the crust is now so dense it isn't possible to prove this.