Yes, this Kraguj in the link you've posted is painted with Serbian markings. However, I must point out that these are temporary markings used for very short period of time before definitive insignia (roundel with a white cross) was adopted in 2006. I'm afraid you will not find Kraguj with new definitive Serbian national markings as this aircraft are withdrawn from operational service. Maybe you could make a profile of some other aircraft from Serbian Air force - MiG-21, MiG-29, G-4 Supergaleb, J-22 Orao... Some interesting paint schemes on some of those aircraft I think. Just check the link I've posted in my previous post.
Also, please take note and draw correct flag in the backgroud.
EDIT: Clave, the purpose of my original post was not to criticize your decision to use profile of Kraguj. After all, this aircraft was used in Serbia although with Police rather then with Military. To be honest though, the profile of some other plane on active service with Serbian AF would be nicer. But that's not my main point. In the first place I just wanted to point out that you have drawn incorrect flag on the aircraft tail fin and in the background of the picture. Order of colors on the national flag should be (from above) red-blue-white as shown on pictures I've posted.