The wrinkles will have very little effect. Don't worry about them too much. Sometimes... its better to just not mess with it.
*************
If you REALLY want to get rid of the wrinkles.... You can take a household iron and get most of the wrinkles out.

If it has the self-stick covering (I think that plane does...) then the covering will not handle heat well... but it can be carefully shrunk a little. Start down in the delicates area... and be careful. (test on the TE of the aileron... where if you melt the cover it won't be a disaster. Hold for 5 sec, and if its going to melt... it will.)

If it has Monokote... you can set the iron right at the steam line with most irons. (start a little lower.. and if it won't shrink, turn it up a little.)