Lottie / 2D Line-Art Animator for Custom Web Animation (After Effects / JSON)

I am looking for a skilled motion designer to build custom, lightweight Lottie animations for a web project. You can view the live website context and AI placeholders here: https://nostruminc.netlify.app/ Our client wants to replace these current AI placeholders because they find them too heavy, and dislike the animations. We want to refine them into clean, fluid, continuous-line vector Lottie animations that look sophisticated and are fully optimized for both desktop and mobile performance. Because these current graphics were generated with AI, we do not have source vector files. You will need to illustrate the clean vector assets and animate them into Lottie (JSON) files. Specific Animations Needed: Caterpillar to Butterfly Morph: An elegant, continuous-line doodle animation showing a caterpillar morphing into a butterfly. Target style reference: https://nostruminc.netlify.app/nostrum-motion-references.html (referencing the butterfly outline sample). Zebra & Environment: Smooth animation of a zebra walking across the screen, interacting with jumping beans and a plant sprouting on the page. Yin and Yang to Brain Morph(Contact Us Section): A continuous looping Lottie morphing animation between a Yin and Yang symbol and a human brain. Please review the site link, target style reference, and let me know your estimated hours, overall timeline, and share any portfolio examples of similar line-art Lottie animations!