Making product shots pop/white background same image to image? (tutorial reco?)

HI there,

I am a ceramic artist and am having trouble figuring out how to get the same white background on photos of my work from image to image. I have worked with the copy and paste edits and that is cool but seems the white back ground is different in each photo I take, even within same photoshoot-time of day, etc... and so I have to edit each image a bit more even after cut and paste.

I am not a pro photographer and have had good advice and have good equiopment. 

Can anyone suggest tutorials on either photo set ups (I am totally happy to learn better photo techniques to make the editing easier!) or on the editing practices. I do not want to eliminate all the shadow I just want the same white (tone/temp?) in each image.

I use an iPhone 8 for photography and Lr cc for edit and have a Mac(I am new to Lr and am learning/had previously used iPhoto only to lousy results.)

Thank you so much!