Hi skimmed a wall today and have ended up with cracks showing in a couple of places, think it may be down to rushing the pva coat resulting in the plaster drying too quickly, was thinking of scraping out any cracked bits and using easifill or bonding and doing reskimming the full wall, would like to try to avoid scraping the full wall, how soon could I plaster over fresh plaster if this is a viable option, any advice would be appreciated thanks.