Need Help with a Skin for a balao boat

[FADM Gryphon]

I have downloaded skins from battleflags and I love them but the back third is black instead of grey. I have experimented and mostly got this fixed using only paint and photoshop, I can not get my lines smooth out. When in the game you can see up close where it needs tweaked on to follow the lines of the side of the boat. Then the very back of the boat nned work. if someone could help me? and where do I need to load the file so others can look at it?

[Silverwolf]

Photobucket is a good place to upload it. Or imageshack if you don't have a photobucket account.

[FADM Gryphon]

Here is the image showing my problems.
http://www.subsim.com/radioroom/picture.php?albumid=59&pictureid=375 I will need to know where to upload the dds file if you need to look at that as well.