Salute Sakai,
I used to use Corel Draw many moons ago in the print industry. IIRC, Draw is a vector based program, not raster based like Photoshop. Not to sound insulting if you know this. The difference between the two (raster vs vector):
Raster deals with pixels. The more you magnify that pixel, the more fuzzy it becomes. This is what you want for skinning as you are able to blur, smudge, and a miriad of other effects to your paint schemes.
Vector deals with mathmatical points. The more you magnify a vector image, the crisper the image becomes. The drawback is that you cannot blur, smudge, ect your image. It will go straight from one color to the next color border. No fancy effects that can be applied.
Let me try to give you a visual example. Lets say you are painting a very sexy FW190a8. Typical LF camo scheme that has that Morey effect of where the upper and lower paint schemes meet and you have color overlap. In a raster program you can bleed the colors together and overlap them on different layers. In a vector program you cannot get the same subtle overlap. It will go straight from one color to the second color.
Im not trying to sound confusing (Im home sick today so I should've waited to post this on a more coherent day.)

Anyway. I would suggest using something other than Draw. If you are unable to get hold of Paint Shop Pro or Photoshop, try Gimp. It is a free download. Not as much control or all the bells and whistles of photoshop, but enough to do a good looking skin.
My .02 cents

ReDhAwK