Design an App Mockup 3D MESSENGER

HELLO SIR , MEM And my project is 3d messenger this msg different to others messengers 3d and in this messenger we also can talk video call's also and when we will type any msg to another friend so that person send a message he want to i send a message how can i check that he checked seen my message so i want to program a idea that is when i wll send a message just like a whatsapp when we send a msg nd he seen after then click colour will be blue , nd my idea some different when we send a message one rose will be there like click of whtsapp after that he seen my msg my rose colour white before seen and after seen the colour rose will be red and any one want to change back groung he or she can changed profile and status also will be included and graphics and messanger i can be desingn of that messanger because sir this is a messanger just like as 8-15 new app n my mind games and apps thank you so much