Roblox Game Item Icons

I need three bright, cartoon-styled item icons for my new Roblox game. The look should match the playful, chunky art you see in popular Roblox titles—bold outlines, vivid colours, and easy readability at small sizes.

Scope 
• Icon A: one base design of a coin plus four visual variants (4 different coins packages) 
• Icon B: one base design of a BUX(premium coin) plus four variants  (4 different coins packages)
• Icon C: single version only, a ticket

That comes to nine finished icons altogether. Please deliver each on a transparent background, squared and large enough for Roblox (512x512 px or higher). Alongside the final PNGs, include layered source files (PSD, or equivalent) so I can adjust details later if needed.

I’d like to review a quick concept sketch for approval before you render the finals, and a one-week turnaround works well for my schedule. If you’ve created Roblox icons or similar game-item art before, feel free to link a sample when you respond.