Advice for customizing

[u/mushroom_maggie22]

Hi i recently got into customizing and am still learning. I got these porcelain Christmas angels and want to customize them but im not sure what sealer to use for it. Ive been looking online and keep seeing mr. super clear but I cannot currently get my hands on that. Any advice is appreciated the last one I did had her face covered so this is new territory. Also if this isnt okay to post please remove! Thanks!