Because I recognize that going to nail salon in S'pore is very expensive and they may do not do as well as you wish, I think it's better to make nails by yourself when relaxing at home. With some people like me, making nails at home is to reduce stress at work or school.
First, there are some nail polishes with thin applicator which helps you to draw nail tips easily. It is no need to be a professional to do this. Moreover, you can draw lots of things on your nails with it.
S$5 each
Pink glitter
Apple green
Silver glitter
Green glitter
Pink
I also sell rhinestones which is crystal, not plastic...
There are some shapes (like round, rectangle, square, diaper etc), colors and sizes... But it's not clear to take photos, so if you are interested in, please contact me:
Chloe
Tel: 98060486
YM: chloe_nguyen0903
Here are some model I do it by my own 
I sell one cracked nail polish set (includes 3 bottles) at S$20