Hello, guys. This is my first post.
Today I will show you an airplane I made based on Cessna Citation models. It was rendered with Blender Cycles 2.68a and I hope you’ll like it. Feedback appreciated.
(Note: I’m still new to Blender.)
hi,
if you begin in Blender, you have at least finish a project, that’s a good thing. But there is many points you can improve on your render by opening a topic in the WIP project. For example, your wall texture is not on the same scale. White stripes on the ground are “plain”.
But just take it as constructive opinion 
You are right, I used texture painting for the stripes on the ground, that was the only way I could find for making them. They kinda “ate” the texture on the ground and I didn’t know how to fix that, but I will look forward to make it look better sometime.
The different scaling for each wall texture was made on purpose, because unfortunately it was the texture I most liked, but it’s too small :(, so I scaled them differently, then people wouldn’t notice that the rust on the walls look exactly the same to each other. xD
You know, I still haven’t found a good tutorial on how to make rust in Cycles with only the noise texture, I heard it was possible.
Thank you for the feedback, I appreciate it and I will look forward to improve my skills. 
Hi,
good approach, no doubt you will improve your skills ! For texturing, UV unwrapping + 2D software (like PS/Gimp and vector drawing like Illustrator/Inkscape) are -imo - essential. Of course, you can/should use procedural textures and other builtin or native features (like painting or grease pencil) but in many case you just need UVs.
If you like planes, I must give you this link to read the great book of witold : virtual aircraft modelling
It’s not expansive, he did it with passion and you can gain days by reading it ! Only with Open Source software.
++
Thanks again, @ookka. I installed GIMP days ago and I realized I need some experience on it Gonna try better next time.
The book seems to be excellent, I have checked others but they were all about Maya 3D or AutoCAD, finally saw one supporting open-source apps.