To verify if a nail polish base is dry enough for your design to be applied on:First touch the polish on your nail delicately with your finger and if it`s dry enough not to be sticky or to deform during this procedure, then press more firmly with your finger tips and see if the fingerprint remains imprinted on the nail polish layer. if you can see the fingerprint, the nail polish is not dry enough. If it doesn`t get imprinted, no mater how hard you press then the layer is definitely dry enough.
To make sure you're not going to smudge the design while applying the transparent nail polish sealing layer:
Seal first the design, let it rest for five minutes and than, seal the rest of the nail.
If your design contains glitter, first seal the glitter and then the rest of the design, in order for the small particles of glitter not to spread all over the nail.