Here is how to fix wrinkled spray paint that can happen after spraying an item with spray paint. A few different factors can cause the finish to wrinkle or crack when applying another coat of paint. The most common – is applying the paint too thickly - which makes the surface of the paint dry too fast and not the underside.   When you re-coat, the solvents in the paint shrink and this causes the wrinkling. How to fix spray paint crackle and the way to avoid it– spray only when the temperature is 65 – 85 degrees, apply only light even coats, and re-coat every few minutes. Also read the back of the can. Some brands say you should get all re-coating done in under 30 - 60 minutes. After that, do not re-coat at least for 24 - 48 hours or the paint may wrinkle. Again...read the label for specifics. Another reason it may happen is if there is wax or residue on the item that is incompatible with the paint. Sand, clean well and dry your piece before painting. Use a primer and make sure the spray paint you are using is made for that specific surface.   Read the label.