why it camed like on photo? when you brush very tiny bubles are left on part?

and what is sad that this happening on after 3 layer or more after brushing paper and cleaning. what to do now? to brush with water pape and relay one again? as that was last layers.

i agree i think i just simply brush with paper and sand. but i done one badge yesterday i layed resin second layer and dam those dirty bubles and i thought o what to do i had home heater i put near that my pieces and everything gone. so i try on other parts but i think mystery starts to be solved it mean temperature doing this. so i post what happening on my amg panels that i do.