I really admire those of you who undertake modelling.  I have tried my hand at it a few times, each of which ended up a spectacular failure and an excercise in frustration.  

Now it seems everytime I start up Hexagon, or Blender, or Wings3D, or whatever modelling package, I just end up staring at the screen for a long while wondering where to begin LOL

So, if you have the knack (and the will to learn) more power to you! You deserve a pat on the back just for TRYING, let alone trying again. 

Go forth and create great things!