About this 3D model

Hello everyone, Please bear with me as this is my first Fusion 360 creation. I know the mesh is far from clean, but I'll try to improve. This is a coaster with indentations for shock absorbers. The model is 10 cm in diameter and is designed to hold 6 ×2mm absorbers (the indentation is 7 mm in diameter). Otherwise, this logo is the visual identity of the largest French-speaking forum, HFR.