then level/flat-sand and 'feather-out' with several coats of thinned out 'color matched gel' (theres no such thing as 'white') - use a PreVal sprayer.
Pre-filter the thinned gel with a 'very fine' paint strainer and REMOVE the small 'strainer' on the PreVal suction tube. Spray on some PVA for final cure.
Flat sand again to 1000 - 2000 grit, then buff out.
Lots of gel repairing and *spraying* methods/videos on the 'net.