Design a whimsical/modern family crest for my wedding!

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This is a personal project for my upcoming wedding.

I'm looking to have a modern family crest designed to use as the emblem/logo for my upcoming wedding.
Objective: To create a ‘family crest’ for Charl and Di for use on their wedding invitations and other wedding accessories

Style: Modern, stylish, whimsical – not stuffy/old fashioned – see visual examples – really like the watercolour approach, but also the simple line drawing – perhaps it is possible to create a combined look – eg line drawing embellished with watercolour/colour.

Uses: Will be used on our wedding invitation (likely to be digital); would like to be able to isolate the two main characters for use on other items; would potentially like to be able to have a rubber stamp created so we can easily use the crest on items such as place cards or menus; might want to have the crest printed on cupcakes or a cake.

See attached brief for all the details and some visual examples.

See full brief and examples attached.
Note in the brief - I mention a lot of objects that could potentially be incorporated into the crest - this is no doubt too many and will be too busy - so I leave it to your creative judgement what to incorporate to get the right balance and meaning across. Please don't feel obligated to use all of them.