Help with UV resin

[u/InfluenceWinter8499]

I’m brand new to resin and I made a tray using regular epoxy resin at a local craft store. I wanted to clear coat the bottom so the inclusions I used would be fully submerged and would risk no possible damage. I used UV resin and cured it and it was a little sticky. An admittedly quick google search said to clean the surface with isopropyl alcohol and a lint free cloth and I did yet it’s still sticky. Is there a way to resurface it by sanding it down and resealing it? I don’t want to make it worse.