BLOCK or BUBBLE lettering.
CHISELED (bevilled) LETTERS
-Bubbles would be best reproduced with bubble lettering.
-Letters would need to be on a colored paper to show highlighted edges.
-Color saturation would be strong around edges of letters, and lighter in the middle (value)
-Highlights and colors would need to flow in the direction of the outer contour.
Glitch
Neon Sign
In the signage industry, neon signs are electric signs lighted by long luminous gas-discharge tubes that contain rarefied neon or other gases.
NEON SIGN CRITERIA
-Use Mid tone to Dark paper
-Lettering can be connected and thin (like a tube). The tube bends, so it cannot be sharp on the edges.
-The center of tube is the lightest area (white)
-The outside of tube is more saturated in the color.
-Around the tube (on background) is a light glow of the color (use value) .
Metallic Mylar Balloons
-scrunch lines on the inside/bends of letter (angling inward)
-usually highlight in center/top of letters.
-usually shadows at bottoms of letters.
(this will change depending on the lighting and perspective).
-has 3-4 tints/shades of balloon color
(example- a sliver balloon would have white, greys, and black)
It will help to use visual references: Click Here or Here