Hello guys, maybe you can help me with something...

I'm doing nails with OPI axxium gels, mostly sculpturing without tips, but sometimes it happens that gel is cracking on the middle of the nail within 24h hours. I'm pretty sure I'm doing all steps properly but still it happens..any idea why?

Also when re balancing P&W sculptured forever french, natural nail (free ege) is showing on the top when I'm shaping and filing. I didn't file it to much and sculptured nail is not even thin but somehow the nail is showing on the top. It makes me thinkthat there is the layer of white gel below the natural nail, is it possible?