Part 2 (and should be the last part) of my Gunpla masking for dummies 
If you follow through my method of using scotch tape to mask your kit, you might notice sometime, certain parts might be hard to mask due to irregular shape or weird angle, etc. What I do is actually make use of blue tack 
Following steps is an example,
1) after masking, notice that it was not cut properly due to the deep and sharp corner.
2) take some blue tack, and paste it on the location u would like to mask.
3) Use a sharp object(In this case i use a penknife) to slowly spread out the blue tack over the area, take note not to cover the other part. Remove any excess blue tack if any.
4) completed! Ready to be painted 
5) After painting, remove the tapes as per normal, if u notice any blue tack still sticking on yur kit, juz take another bigger piece of blue tack to stick it off
After painting.
Hope this will help all model kit fan! Comments welcome!
Thanx thanx and thanx!
Welcome! ^_^