If you are serious here, you should provide your design portfolio. People won't know the extent of your expertise unless you give them examples.

(1) MIA'S CREATIVE [Designs, Logos, ANN Thread,Banners ,Photography SERVICE.... ETC]
(2) [15$]🔥 - ⚡ Zwei Signature Design Service

Above 2 are good examples of offering services. Newbies can't display images in their posts yet, but you can still provide links to platforms where your design portfolio is displayed.