Tanning tips

any tanning tips to help fix this monstrosity 🫠🫠 i wanna wear crop/no sleeve tops and shorts/skorts this summer and one of my insecurities is my uneven tan. I have no idea how to go about evening it up. I already try my best to wear a very loose long-sleeved button up top and sunscreen to shield my already tanned arms but aside from that I dont know what to do. I do want it to be natural so no self tans (ive tried one before and it was not it for me) literally anything would be helpful if there are any tips lol